A motorcycle fails its MOT far less often than a car, and when it does fail it is more likely to be for something that could actually hurt the rider. This guide is about what a bike failure costs to put right in 2026. It uses the DVSA figures for classes 1 and 2, and sets them against cars and light vans in classes 3 and 4 where the comparison earns its place. In summary:
DVSA publishes initial failures by defect category for every test class. The full 2025 to 2026 year for classes 1 and 2, meaning motorcycles with and without sidecars, was published on 10 September 2026 and covers 1,019,745 tests. This is the whole picture, biggest category first.
| Defect category | Percent of tests | Percent of all defects | Percent of Dangerous defects |
|---|---|---|---|
| Lamps and reflectors | 7.31 | 40.74 | 19.43 |
| Brakes | 3.16 | 18.25 | 24.77 |
| Structure and attachments | 2.08 | 11.23 | 9.84 |
| Suspension | 1.97 | 10.20 | 3.23 |
| Tyres | 1.85 | 8.84 | 34.77 |
| Steering | 1.24 | 5.84 | 6.76 |
| Identification of the vehicle | 0.92 | 3.91 | none recorded |
| Wheels | 0.17 | 0.76 | 1.20 |
| Audible warning (horn) | 0.06 | 0.24 | none recorded |
Two things jump out. Lamps are four in ten of everything written on a motorcycle ticket, which is more concentrated than on a car, where the same category is 24.89 percent. And tyres, a category most riders assume they have under control, produce a third of all the dangerous defects on British bikes off less than two percent of tests.
This is not a one year pattern. The April to June 2026 quarter came in at 12.40 percent overall, with lamps at 41.89 percent of defects and tyres at 35.03 percent of dangerous ones. The shape holds.
The headline comparison flatters motorcycles and then takes some of it back.
| Measure, 2025 to 2026 | Motorcycles, classes 1 and 2 | Cars and light vans, classes 3 and 4 |
|---|---|---|
| Initial failure rate | 13.40 percent | 27.51 percent |
| Tests with at least one Dangerous defect | 4.11 percent | 7.22 percent |
| Share of failures carrying a Dangerous defect | about 31 percent | about 26 percent |
| Average defects per failed test | 1.77 | 2.39 |
| Final failure rate after repairs at the station | 8.20 percent | 22.30 percent |
A failing bike carries fewer faults than a failing car, which fits the machine: there is less of it, and most of it is visible without taking anything apart. But a bike failure is more likely than a car failure to include something categorised Dangerous, and the gap between the initial 13.40 percent and the final 8.20 percent is the real story of the motorcycle MOT. Of the 136,626 bikes that failed at first inspection, 53,012 were put right at the test station and passed the same day, which DVSA records as a pass after rectification. Only 83,614 bikes in the country were actually sent away failed. On cars the same repair-in-the-bay route closes far less of the gap.
That is worth knowing before you book. A large share of bike failures are a bulb, a plate, a loose chain guard or a horn, and a workshop that tests and repairs under one roof will simply fix them while the bike is on the ramp.
There are three retest routes on GOV.UK and the difference between them is worth real money.
The next working day list is where motorcycles are singled out. It includes lamps but excluding headlamp aim, electrical wiring, registration plates, rear reflectors, mirrors, the horn, seats, and sharp edges or projections. It also includes wheels and tyres, and the entry reads, word for word, "wheels and tyres (excluding motorcycles and motorcycles with sidecar)".
So the biggest failure category on a bike, lamps at 40.74 percent of defects, gets a free next day retest. The category that produces a third of all dangerous motorcycle defects, tyres, does not, even though the rider of a car with the same fault would get one. Brakes are not on the list for any vehicle, and brakes are another 24.77 percent of dangerous bike defects. Add those two and roughly three in five dangerous motorcycle defects sit in categories with no free next day route at all. For those, leaving the bike at the station is usually the cheaper decision, not the lazy one. The equivalent rules for four wheels are in our guides on tyre failure costs and lights failure costs.
Published motorcycle repair prices are rare, because most workshops quote by the job. The figures below come from the public price lists of two independent specialists, MD Racing in Walton-on-Thames and Two Tyres in London, read on 19 September 2026. They are one workshop's prices in the south east, not a national average, and your local rate will differ. They are included because they are real and checkable rather than invented.
| Job | Published price, September 2026 | Note |
|---|---|---|
| Workshop labour, independent specialist | £60 an hour including VAT | Some main dealers quoted at over £90 an hour plus VAT |
| Tyre fitting, loose wheels | £15 one, £30 a pair | Includes balancing, valves and disposal |
| Tyre fitting, wheels off the bike | £30 one, £60 a pair | Cruisers and scooters run to about £70 a pair because the exhaust comes off |
| Front brake pads, one side | £36 | Non-sintered, parts only |
| Front brake pads, both sides | £69.95 | |
| Rear brake pads | £27.50 | |
| Fitting brake pads | £26 per caliper | 30 minutes, includes caliper clean and piston check |
| Front brake disc | £140 to £340 each | Fitting £26 per disc |
| Brake fluid change and bleed | £40 front, £20 rear | |
| Front fork rebuild | £240 parts and labour | Seals, oil, level set |
| Rear shock rebuild | £180 parts and labour |
Read that against the defect table and the arithmetic is clear. The most common failure on a British motorcycle is a lamp, which is usually a bulb and a few pounds, and it comes with a free next day retest. The most dangerous common failure is a tyre, which is a tyre plus £15 to £30 of fitting, and it does not. The worst case on the list, a fork rebuild after a suspension or steering fail, is £240, and suspension is only 3.23 percent of dangerous bike defects, so it is rare as well as expensive.
The maximum a station may charge is £29.65 for a motorcycle of any engine size and £37.80 for a motorcycle with a sidecar. Three-wheeled vehicles up to 450kg unladen are £37.80 and over that weight £54.85, the same as a car. There is no VAT on the test fee. A bike needs its first MOT at three years old, the same as a car.
Those numbers matter because they change what a failure is worth arguing about. A car owner facing a second full fee is looking at £54.85. A rider is looking at £29.65, which is less than an hour of workshop labour. If a fault genuinely needs parts ordering, paying a second test fee later is sometimes cheaper than rushing a bodge to beat the next working day deadline.
You do not need to buy a pre-MOT check. For a motorcycle it is close to a waste of money, because the categories that fail most are the ones you can inspect in a well lit garage in ten minutes with no tools. Lamps, reflectors, the registration plate, the horn, chain tension and the general state of the tyres between them account for well over half of all recorded defects.
Two things are worth more than a paid inspection. First, sit on the bike and have someone walk round while you work every light, including the brake light on both levers and the indicators front and rear. Second, look properly at the tyres in daylight rather than in a dark garage, because tread depth rules for bikes are not the car rules and a tyre that looks legal often is not. We set the bike tread rule out in full in the guide on what the DVSA data says really fails a bike.
It is also worth remembering what the test never covers. The MOT says nothing about the engine, the clutch or the gearbox. A bike can pass with a slipping clutch and a rattling top end, so a clean certificate is a roadworthiness statement, not a mechanical one.
Every failure above stays in the free DVSA record with its category, and the pattern says more than any single line. Four readings are worth having.
A motorcycle MOT is cheap, it is passed far more often than a car MOT, and about two in five of the failures are put right at the station before the bike leaves. If yours fails on a light, fix it and take it back the next working day, because that retest is free. If it fails on tyres or brakes, do not rush it back: those are the two categories carrying most of the danger, neither gets a free next day retest for a bike, and leaving the machine at the station for repair within ten working days costs nothing at all. Skip the paid pre-MOT inspection and spend ten minutes with the lights and the tyres instead. If you are buying rather than testing, a lamps line means nothing, a repeated dangerous tyre line means something, and repeated structure defects mean you should look very hard at the frame.
Figures in this guide: DVSA MOT testing data for Great Britain, initial failures by defect category for classes 1 and 2 and for classes 3 and 4, and MOT test results by class of vehicle, 2025 to 2026 total and the April to June 2026 quarter, published 10 September 2026. GOV.UK pages "Getting an MOT: MOT costs" and "Getting an MOT: retest after a repair", read on 19 September 2026. Published price lists of MD Racing, Walton-on-Thames, and Two Tyres, London, read on 19 September 2026.
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