The short answer
PRS stands for pass after rectification at station. The car arrived with a defect that would have failed it, the test centre fixed it within an hour of the test, and the result was recorded as a pass. It is common. In 2021 about 1 in 16 first tests ended this way (6.2% of 31,301,558 tests); in 2025 it was about 1 in 19 (5.3% of 33,210,951 tests).
For a buyer, a PRS result is neither good nor bad on its own. It tells you the car had a fault on the day and that it was put right before it left. What it does not tell you is what the fault was, or whether the fix was a new bulb or a new tyre. That is the question to ask the seller.
How the national result splits
Each row is the share of all class 4 first tests in that year that passed outright, passed after rectification, or failed outright. The three columns add to the whole.
| Test year | Passed | Pass after rectification | Failed outright |
|---|---|---|---|
| 2021 | 70.5% | 6.2% | 23.2% |
| 2022 | 71.5% | 6.0% | 22.5% |
| 2023 | 71.4% | 5.7% | 22.8% |
| 2024 | 71.7% | 5.5% | 22.8% |
| 2025 | 72.3% | 5.3% | 22.4% |
Two things to notice. The share of tests fixed on the spot has eased every year, from 6.2% to 5.3%, while the outright pass rate has risen. And the official pass rate that GOV.UK publishes, 72.36% for 2025, is the first column only. GOV.UK counts a pass after rectification as a fail, because the car was failing when it was presented. Our figures follow the same convention, which is why the 72.3% here ties to the published number.
At a fixed age the PRS share varies by model more than most people expect. Among cars first used in 2019 and tested in 2025, 2.1% of Audi A3 tests ended as a PRS (20,848 tests), 2.7% of Mini Hatch tests (50,167 tests) and 6.3% of Peugeot 208 tests (16,988 tests), against a national pass rate for cars of that age of 83.5% (2,466,997 tests). Part of that is what tends to go wrong on each car, and part is the habits of the garages that test them.
What can be fixed inside the hour
The definition is in the DVSA MOT testing guide: defects may be rectified within one hour after the test, before the result is recorded on the MOT Testing Service. In practice that is the quick list. A blown bulb. A wiper blade. A number plate lamp. Topping up the washer bottle. A tyre swapped for one in stock. A headlamp aimed. Anything that needs parts ordered or a car on a ramp for an afternoon will not be a PRS; it will be a fail followed by a retest. The retest rules are separate and on GOV.UK retests: a car left at the centre and retested within ten working days needs only a partial retest with no fee.
How to read it on a used car
- Find it. On GOV.UK check MOT history a PRS shows as a pass, with the rectified item listed among the defects for that test. Look at the items, not just the result.
- Ask what was fixed. If the listed item is a bulb or a blade, it is a non-event. If it is a tyre, ask which one and whether its partner on the same axle was changed too.
- Count them. One PRS in ten years is a car that gets its MOT done without a pre-check. A PRS every year is a car that is only ever looked at on test day.
- Check the mileage line. A PRS does not change the mileage recorded, so the odometer trail runs straight through it. A jump or a drop around a PRS is a separate question.
- Weigh it against the advisories. A PRS for a tyre plus an advisory for the other three is a set of tyres due. A PRS for a bulb and nothing else is a clean year.
What this does not mean
A PRS is not a hidden fail, and it is not a sign of a bad garage: the system exists so that a car with a blown bulb does not have to come back another day. Nor is a low PRS share proof of a well-built car; it may be a car whose owners fix small things before the test, or one tested where the garage does not carry the parts. The model figures above describe fleets, not any one car, and the causes behind them are not in the data. If a history worries you, have the car inspected before you pay.
Frequently asked questions
Pass after rectification at station. The car had a defect that would have failed it, the test centre fixed it within one hour of the test, and the result was recorded as a pass. The fixed item is still listed on the record for that test.
Legally the car has a valid MOT, so it is a pass. In the published statistics GOV.UK counts it as a fail, because the car was failing when it was presented. That is why pass rates quoted from official data, including ours, leave PRS out of the pass column.
About 1 in 19 first tests in 2025 (5.3% of 33,210,951 tests), down from about 1 in 16 in 2021. At a fixed age it varies by model: among cars first used in 2019 and tested in 2025, from 2.1% of Audi A3 tests to 6.3% of Peugeot 208 tests.
Not by itself. Look at what was fixed. A bulb or a wiper is routine. A tyre or a brake item deserves a question about the matching part. A PRS every year suggests a car that is only checked on test day.
Sources and method
National shares are passes, pass-after-rectification results and outright fails divided by all class 4 first tests in each test year: 31,301,558 tests in 2021, 32,426,104 in 2022, 32,802,229 in 2023, 33,111,182 in 2024 and 33,210,951 in 2025; 1,953,555 tests ended as a PRS in 2021 and 1,745,661 in 2025. Model figures are PRS results divided by first tests on cars first used in 2019 and tested in 2025: 20,848 Audi A3, 50,167 Mini Hatch, 16,988 Peugeot 208; the national pass rate for all cars of that first-used year in 2025 was 83.5% of 2,466,997 tests.
- DVSA anonymised MOT results, class 4 first tests, 2021-2025
- GOV.UK: MOT testing guide, abbreviations and definitions
- GOV.UK: Check the MOT history of a vehicle
- GOV.UK: MOT retests
About these figures. Figures are computed by SortedCars from the DVSA anonymised MOT results dataset (class 4, first tests only, test years 2021-2025), published under the Open Government Licence v3.0. Pass rate = passes divided by first tests, with pass-after-rectification counted as a fail. No figure is shown for any group with fewer than 500 tests. Test class 4 only, first tests only; retests are excluded. Pass rates describe fleets, not individual machines: they reflect how cars were driven, maintained and used as well as how they were built, and beyond recorded mileage none of that is in the data. A well-kept example of a model with a weak average can still pass; a neglected example of a strong one can still fail. Alias spellings of a make are counted under one make name and all trims of a model under one model name, using SortedCars' grouping tables.
This article is general information drawn from published test records. It is not professional, mechanical or legal advice, and an MOT pass or a clean MOT history does not guarantee that a car is roadworthy today. If you are unsure about a car, have it inspected by a qualified mechanic. You can check any vehicle's MOT history free on the official GOV.UK MOT history service.
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