MOT Retest Explained: Rules, Costs and Time Limits

Failing an MOT is frustrating, but it is not the end of the road. The retest system is designed to give you a fair chance to put things right without paying for a full test again. Here is everything you need to know about how it works.

What Happens Immediately After a Failure?

The tester gives you a VT30 refusal document listing every failure reason. This is your official record of what needs fixing. Keep it - your garage will need it to know exactly what work is required.

You cannot legally drive the car away unless it has an existing valid MOT certificate. If the previous certificate is still in date, you can drive home and arrange repairs. If the old certificate has also expired, you can only drive it to a pre-booked repair appointment.

Use our free MOT checker to confirm whether your existing certificate is still valid before deciding whether you can legally drive away.

The 10-Working-Day Retest Window

You have 10 working days from the date of failure to return for a partial retest at the same garage. Working days means Monday to Friday - weekends and bank holidays do not count.

This window exists so you have time to arrange and carry out repairs. For most straightforward failures - a blown bulb, a worn wiper blade, a brake imbalance - this is more than enough time.

Miss the 10-day window and you will need a full retest at the full price. The partial retest option is lost.

What Is a Partial Retest?

A partial retest only re-checks the items that caused the failure. Everything that passed first time is not re-examined. This saves the tester significant time - which is why it costs nothing extra when done at the original garage within the window.

If the repaired items now pass and everything that was originally fine is still fine, the certificate is issued. You do not repeat the entire 45-60 minute inspection.

This is one reason it makes sense to choose a garage that both tests and repairs - you can often get the work done and the retest completed on the same day.

Is the Partial Retest Always Free?

A partial retest at the same garage within 10 working days is free for failures. There is no government-set fee, and garages are not permitted to charge for this specific retest type.

However, if you take the car elsewhere for the retest - even within the 10 days - you will pay for a full test. The free partial retest only applies to the original test station.

Similarly, if you return after the 10-day window for any reason, you pay the full fee regardless of which garage you use. The clock resets and it is treated as a brand new test.

Full Retest Costs

A full retest is a completely new MOT test, charged at the standard rate. The government maximum fee for a car is 54.85 pounds. Many garages charge less - competition between test centres keeps prices down in most areas.

Motorcycles have a lower maximum fee of 29.65 pounds. Vans and light goods vehicles are capped at 58.60 pounds. The fee is set by the government - no garage can legally charge more than the maximum.

If you have advisory items that later become failures at your next annual test, that is a standard new test - not a retest - and the full fee applies.

Can You Appeal a Failure?

Yes. If you believe a failure reason is wrong, you can appeal to the DVSA. The process involves requesting an impartial examination, usually at a DVSA vehicle testing station. There is a fee for the appeal test itself.

Appeals are relatively rare. Most disputes are better resolved by asking the tester to explain their reasoning - they are required to do so. In many cases, a misunderstanding can be cleared up without a formal appeal.

If the appeal test confirms the original failure, you lose the appeal fee. If it finds the tester was wrong, you get a refund and the car is treated as having passed.

Dangerous Defects: Do Not Drive

If the tester marks any item as a Dangerous defect, you must not drive the car. This is a legal and safety requirement. Dangerous defects pose an immediate risk - the car is considered unroadworthy.

In practice, the tester will usually tell you verbally. You will need to arrange collection or repair on the spot. Some garages offer a recovery service for vehicles that cannot legally be driven.

Major defects allow the car to leave under its existing valid MOT (if one exists), but Dangerous defects are a legal stop. Do not risk driving away - the consequences if you are involved in an accident are severe.

What If Only Some Items Are Fixed?

At the retest, the tester checks every item listed as a failure. If some items are fixed and others are not, the car fails again on the remaining items. You are not issued a pass certificate until every failure point has been resolved.

You can return for a second partial retest within the original 10-day window if you need more time to fix the remaining items. The window is from the original failure date, not each subsequent retest.

This is important to factor into your repair planning. If you have five failure items, try to get them all fixed in one visit rather than returning piecemeal.

Advisory Items at the Retest

Advisories are not re-checked at a partial retest. They were informational notes at the original test - the car passed on those items. At the partial retest, only failure items are re-examined.

That said, advisories matter. If an advisory item deteriorates between the original test and the retest, the tester may note a new advisory - or if it has worsened significantly, potentially a new failure item. Testers assess the condition on the day.

Read our full guide to MOT advisories to understand what you are expected to do about them.

Planning Repairs to Minimise Cost

The smartest approach is to get a pre-MOT check done before the official test. Many garages offer an informal check - sometimes free, sometimes a small fee - where they run through the test checklist and flag likely failures before they become official.

A pre-check means you can fix known issues before test day, dramatically reducing the chance of a failure. Read our guide to the top 10 MOT failure reasons to know what to look at yourself.

If your car does fail, get multiple quotes for repair work if the costs are significant. You are not obligated to use the same garage for repairs as for testing - just remember the free partial retest only applies if you do.

Retest and Your MOT Expiry Date

A pass at retest earns a new 12-month certificate from the date of the retest pass. It is not backdated to the original test date. So a retest that passes on day 8 after the failure gives you a certificate from that day forward.

This means any delay in arranging repairs can cost you a few days of MOT validity - but it is not significant enough to rush an unsafe repair job. Safety comes first.

Once your new certificate is issued, check the MOT history to confirm the updated record appears on the DVSA database. It should update within minutes of the certificate being issued.

Full Retest vs Partial Retest: The Key Difference

When your car fails its MOT, there are two types of retest available to you. Understanding the difference between a partial retest and a full retest is essential — it affects both what gets checked and how much you pay. The two are not interchangeable, and choosing the wrong assumption can lead to unexpected costs.

A partial retest covers only the specific items that caused the failure. The tester returns to those failure points, checks that each one has been repaired to the required standard, and records the result. Items that passed during the original inspection are not re-examined. This is possible because the original pass items are still recorded in the DVSA system — the tester picks up where the original test left off, rather than starting from scratch.

A full retest, by contrast, is a completely new MOT inspection. The tester goes through the entire checklist from start to finish — every light, every brake, every item on the standard schedule — just as if your vehicle had never been tested before. It takes the same amount of time as a standard MOT, typically 45 to 60 minutes, and costs the same as a new test.

When Does a Partial Retest Apply?

A partial retest is available only under specific conditions. All three of the following must be true:

• The retest is being carried out at the same garage that conducted the original test
• The retest takes place within 10 working days of the original failure date
• The vehicle has failed on specific items that can be individually re-checked

If any one of these conditions is not met, the garage must conduct a full retest — and charge accordingly. There is no halfway option. You cannot, for example, take the car to a different garage and expect a partial retest. The link between the original test record and the retest is tied to the test station.

When a Full Retest Is Required

A full retest becomes necessary in several situations. The most common is simply that the 10-working-day window has passed. It also applies if you choose to take your vehicle to a different test station — even if you are still within the window. If the repairs were carried out at a different garage and you want a fresh assessment from a station you trust more, that is your right, but you will pay for a full test.

Full retests are also required when the nature of the failure is such that the car essentially needs to be reassessed as a whole. This is uncommon, but it can arise when a repair to one system affects the function of another — for instance, a significant suspension repair that may influence steering geometry.

The Fee Implications

This distinction matters financially. A partial retest at the original station within 10 working days carries no additional fee for failures — the retest is included within the original test charge. A full retest costs up to 54.85 pounds for a standard car, which is the government-set maximum. In practice, many garages charge between 30 and 50 pounds for a full test.

One nuance worth understanding: if your car fails on multiple items and you manage to fix some but not all before the retest, the partial retest still covers all the original failure items. If any remain unresolved, the car fails again on those points. You can return for a further partial retest within the same 10-working-day window — but you only have the one window from the original failure date.

The Retest Time Window: Exact Rules

The 10-working-day retest window is one of the most commonly misunderstood aspects of the MOT retest system. Many drivers hear "10 days" and assume it means 10 calendar days. It does not. Working days means Monday to Friday, excluding bank holidays. Understanding exactly how this is counted can be the difference between qualifying for a free partial retest and paying the full fee.

How the 10 Working Days Are Counted

The clock starts on the day of the original failure. That day counts as day zero — not day one. So if your car fails on a Monday, your 10 working days begin the following Tuesday and run through to the Monday two weeks later (assuming no bank holidays in between). In total, this typically gives you just under three calendar weeks, depending on where the failure falls in the working week.

Bank holidays are excluded from the count. If a bank holiday falls within your 10-working-day window, the window effectively extends by one calendar day to account for it. Keep this in mind if your failure happens in the run-up to a bank holiday weekend — you may have slightly more time than you initially think.

Same Station Requirement

The 10-working-day window is only relevant if you are returning to the original test station. The partial retest option — and the associated fee benefit — is specifically tied to the garage that conducted the original test. If you intend to go to a different garage, the window is irrelevant: you will need a full retest regardless of the timing.

What Happens If You Miss the Window?

If the 10-working-day window passes before you can get the car back for retest, the partial retest option is lost entirely. When you eventually take the car back — whether to the original station or a different one — it is treated as a completely new MOT test. The old failure record does not carry over. The tester will inspect the entire vehicle from scratch, and the full test fee applies.

This matters practically because it means the clock is ticking from the moment your car fails. If you know repairs will take time — particularly if you need to order parts — factor the working day count into your planning from day one. Some parts suppliers offer next-day delivery, but if specialist components are needed, a week can pass quickly.

Can the Window Be Extended?

No. There is no provision under DVSA rules for extending the 10-working-day window for any reason — including illness, financial difficulty, parts delays, or any other circumstance. The window is fixed. If you cannot complete repairs within it, you simply pay for a full test when the car is eventually ready.

Some garages will accommodate you informally — for instance, if they have been holding your car throughout and the delay was partly caused by them — but there is no legal obligation on their part to honour the partial retest rate outside the window. Any such arrangement is at the garage's discretion.

Retest Fees: What You Should Pay

One of the most important things to understand about MOT retest fees is that they are regulated by the government. There is a clear maximum fee structure, and no garage — regardless of its pricing policy — can legally charge above these limits. Knowing the exact figures means you will not be overcharged.

Partial Retest at the Same Station: No Extra Charge

When a car fails its MOT and is retested at the same station within 10 working days, the partial retest for failure items is included within the original test fee. You have already paid for the MOT; the partial retest carries no additional cost for the failure items. The government's fee schedule makes no provision for a separate partial retest charge in this circumstance — meaning any garage that attempts to charge one is operating outside DVSA rules.

There is one nuance: if the car fails and you leave the garage, come back the same day or the next day, and the car undergoes a partial retest, the fee is still zero for the failure check. The same-day retest and a return visit within the window are treated identically under the rules.

The Maximum Fee for a Partial Retest After Leaving

If your car left the test station after failing and returns within the 10-working-day window, the DVSA sets the maximum partial retest fee at 5.80 pounds. This is the fee for a partial retest conducted after the vehicle has been taken away for repairs and returned. In practice, most garages do not charge this — they absorb it as part of customer service. But it is the legal maximum if they do charge.

Full Retest Fees in Detail

A full retest is charged at the same maximum rate as a standard new MOT. The government maximum for a standard private car (class 4 vehicle) is 54.85 pounds. This is the absolute ceiling — no garage can charge more. However, garages are free to charge less, and many do. In competitive markets, full MOT tests are often priced between 30 and 50 pounds, with some offering deals for online bookings.

The maximum fees for other vehicle classes are as follows:

• Class 1 and 2 motorcycles: 29.65 pounds
• Class 3 vehicles (3-wheelers): 37.80 pounds
• Class 4 (cars up to 8 passenger seats): 54.85 pounds
• Class 5 (larger passenger vehicles): 57.30 pounds
• Class 7 (goods vehicles up to 3,500 kg): 58.60 pounds

These maximum fees are set by the DVSA and reviewed periodically. For current figures, check the full MOT cost guide which is updated to reflect any government changes.

What Garages Can and Cannot Charge

Garages can charge any amount up to the government maximum for a full test. They can also choose to charge nothing for a partial retest — many garages do this as a matter of course to retain customers. What they cannot do is:

• Charge more than the government maximum for any test type
• Charge for a partial retest at a rate higher than 5.80 pounds (for vehicles that left and returned within the window)
• Refuse to issue a VT30 failure notice if the vehicle fails
• Charge separately for the VT30 document itself

Repair costs are entirely separate from test fees and are not regulated. Garages can charge whatever they choose for parts and labour on repair work. This is where comparison shopping — getting quotes from two or three garages — can save you significant money on larger repairs.

Your Rights if You Disagree With the MOT Result

MOT testers are trained and accredited professionals, but they are human beings making judgement calls on complex mechanical systems. If you genuinely believe a failure is incorrect — that an item has been failed when it actually meets the required standard — you have a formal right to challenge the result. This is an important consumer protection that many drivers are unaware of.

Start With the Tester

Before escalating to a formal appeal, the first step is always to ask the tester to explain the failure in detail. Testers are required by DVSA rules to explain their findings to the vehicle owner or their representative. Ask them to show you the specific item that failed and explain precisely why it does not meet the standard. In many cases, what appeared to be a questionable failure is explained clearly when you see the item and understand the assessment criteria.

If the tester's explanation is reasonable and the failure seems legitimate on closer inspection, this is the practical end of the road. Accept the result, arrange repairs, and proceed with the retest. Most apparent disputes are resolved at this stage.

The Formal DVSA Appeal Process

If you remain convinced the failure is wrong after speaking with the tester, you can make a formal appeal to the DVSA. The appeal process is known as an appeal test or impartial examination and involves the DVSA sending an independent vehicle examiner to assess the vehicle — either at the original test station or at a DVSA vehicle testing station.

To initiate an appeal, you must contact the DVSA within 10 working days of the original test date. This deadline is firm. You can contact the DVSA by telephone or via the GOV.UK website. Have your VT30 failure notice and the test reference number to hand when you call.

The Appeal Test: What Happens

Once an appeal is accepted, the DVSA arranges for an independent vehicle examiner (VE) to inspect the vehicle. This is not carried out by the original tester or by anyone at the original test station — it is a genuinely independent assessment. The examiner checks the specific items under dispute using the same MOT inspection standards, and records their findings.

There is a fee for the appeal test. The fee is equivalent to the cost of a new MOT for your vehicle class — up to 54.85 pounds for a standard car. This is paid upfront when you submit the appeal.

Outcomes of the Appeal

There are three possible outcomes from an appeal test:

• Original tester was wrong: The examiner finds the item meets the required standard. The failure is overturned, your vehicle is treated as having passed on that item, and your appeal fee is refunded in full.
• Original tester was correct: The examiner confirms the failure was justified. You lose the appeal fee, and the failure stands. You will need to repair the item and return for a retest.
• Borderline decision: In cases where the item is at the threshold of the pass/fail standard, the DVSA may find that the original tester acted within acceptable discretion even if a different tester might have made a different call. These cases are common for items like tyre tread depth close to the legal limit or brake performance within a borderline tolerance.

When an Appeal Is Worth Considering

Appeals are relatively uncommon because most MOT failures are clear-cut and well-justified. However, an appeal may be worth pursuing if:

• The tester has failed an item you believe has been recently replaced and is clearly within specification
• A measurement-based failure (brake performance, emissions) seems inconsistent with your vehicle's recent service history
• You have a second opinion from another qualified mechanic who believes the item passes

Do not appeal simply because you are unhappy about the cost of repairs. The appeal process is designed to correct genuine errors in test judgement — not to negotiate around legitimate failures. Using it frivolously wastes time and money.

Choosing a Different Garage for the Retest

You are under no obligation to use the same garage for your retest as conducted the original MOT. This is a fundamental consumer right — you are free to take your vehicle wherever you choose. However, exercising this right comes with a specific consequence: you will pay for a full retest rather than a partial one.

Your Legal Right to Go Elsewhere

No garage can require you to have repairs or retests carried out on their premises. If you feel more comfortable taking the car to a different test station — perhaps one closer to home, one you have used and trusted for years, or one recommended by a friend — that is entirely your prerogative. The original garage retains no claim over the vehicle and cannot prevent you from going elsewhere.

The practical consequence is straightforward: a different station means a full retest. The partial retest option is only available at the station that holds the original test record. Any other DVSA-authorised test station will treat your vehicle as a new arrival and conduct a complete inspection.

The Full Retest Cost at a Different Station

At a different station, the standard full test fee applies — up to 54.85 pounds for a car. You will need to book this in the normal way, bring the vehicle at the appointed time, and the tester will run through the full inspection schedule. Your VT30 failure notice from the original test is useful reference material for the new tester, but they are not bound by it — they assess what they see on the day.

If the items that caused the original failure have been properly repaired, this should not be a problem. A competent repair will pass inspection regardless of which authorised tester carries out the retest.

When Going Elsewhere Makes Sense

There are legitimate reasons why you might choose a different garage for the retest:

• You dispute the original result and want an independent assessment — though note that a formal DVSA appeal is the more appropriate route if you believe the original tester made an error.
• The repair was done by a specialist — for example, a specialist exhaust or braking system centre — and returning to the original station would require an inconvenient journey.
• You have moved or the original station is far from your location and a local retest at full price is more convenient than a long journey for a partial retest saving.
• The original garage has a poor reputation for customer service and you do not wish to return to them.

In most cases, however, returning to the original garage for a partial retest within the 10-working-day window is the most practical and cost-effective option. The potential saving — avoiding the full test fee of up to 54.85 pounds — is significant enough to make the return trip worthwhile in most circumstances.

Preparing for Your Retest: Getting It Right

The retest is not simply a formality after you have had repairs done. Arriving prepared — with evidence of the work carried out and confidence that every failure item has been properly resolved — gives you the best chance of a clean pass first time and avoids a second round of delays and costs.

Verify Every Failed Item Has Been Fully Repaired

Before you take the car back for its retest, go through the VT30 failure notice item by item. For each failure, confirm with the repairer that the specific fault has been addressed — not just that related work was done, but that the actual item that caused the failure has been repaired or replaced to the MOT standard.

It is surprisingly common for a car to return for retest and fail again on the same item because the repair addressed an adjacent problem but not the specific fault. For example, if the failure reason was "nearside front brake pad worn below limit," the fix must be the replacement of those brake pads — not just an adjustment of the brake caliper.

Walk around the car yourself before the retest. Check any exterior items — bulbs, wiper blades, number plate condition — that were on the failure list. These are items you can verify with your own eyes without specialist knowledge.

Obtain an Invoice or Receipt for All Repair Work

Ask the repairer for a written invoice or receipt detailing the work carried out and the parts replaced. This serves two purposes. First, it gives the retest tester confidence that the specific failure items have been addressed by a qualified mechanic. Second, if any of the same items fail again at the retest, you have documentation that the work was done — which is relevant if a dispute arises about whether the repair was adequate.

Keep this invoice with your VT30 failure notice. Bring both documents to the retest appointment. Most testers will appreciate having this reference material, even if they do not ask for it specifically.

Photographic Evidence Can Be Useful

For significant repairs — brake components, suspension parts, exhaust sections — some drivers ask their repairer to photograph the old part alongside the new replacement before and after fitting. This is not a requirement, but it provides a clear visual record that the work was carried out.

This evidence is particularly valuable if the retest tester questions whether a repair has been done, or if you later need to make a DVSA appeal. It is a simple precaution that costs nothing.

Check That Advisory Items Have Not Deteriorated

Advisories from the original test are not failure items and will not be re-checked at a partial retest. However, the tester may notice if an advisory item has deteriorated significantly since the original test and record a new advisory — or in rare cases, a new failure — based on its current condition.

For this reason, it is worth checking advisory items before the retest. If the original test noted that tyre tread depth was approaching the limit, measure it yourself before the retest. If it has worn further, get the tyre replaced before attending — you do not want to pass the failure items only to fail on a new defect. Our MOT advisories guide explains the different categories and which ones require the most urgent attention.

Book the Retest Promptly

Do not leave booking the retest until the last moment. Garages have limited appointment slots, and popular stations can be booked several days in advance. If your repairs are completed on day 5 of your 10-working-day window, book the retest immediately — do not assume you can walk in on day 9 and be seen without an appointment.

Contact the garage as soon as repairs are finished. Many will accommodate you quickly given that you are an existing customer with a live retest to complete. If the original garage cannot fit you in within the window, you have two options: find another slot that fits the deadline, or accept that you will need a full retest at a different station when it becomes available.

Official Government Resources

The following official UK government sources provide authoritative information relevant to this topic:

• GOV.UK: Getting an MOT — retests
• GOV.UK: How to appeal an MOT decision

The official GOV.UK retesting rules take precedence over individual garage policies — know your rights before agreeing to any retest arrangement.

Frequently Asked Questions

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