Pass rate
82.4%
Around average — 3.8 pts ahead of the 78.6% that cars this age and mileage manage.
Across 91 recorded tests.
Typical repair bill £40–£102
2013 MG 3 Form MOT pass rate
- 2013
- typical 66,922 mi
Only 91 tests of this exact model and year are in the DVSA data, below the 100 we ask for before a page goes in the index. The figures are still shown, because they are the only ones there are.
Most common fault
Brakes
28.8% of faults · 20.9% nationally
mostly worn pads and discs, corroded pipes and a handbrake that will not hold.
Part only £60–£90 for Brake discs seriously weakened. What fitting it takes →
Which year to buy
- Best 2013 82.4% pass · this year
- Avoid 2013 82.4% pass · this year
Across the 1 years on record, a spread of 0 points. See every year →
- First-attempt pass
- 80.8%
- Typical mileage
- 67k mi
The 2013 MG 3 Form MOT pass rate is 82.4% of its MOT tests — 3.8 points ahead of what its age and mileage predict. Brakes is the biggest single reason it fails, at 28.8% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how MG 3 Form does in your corner of the country.
Expert verdict
Brakes: 1.4× the national share
Brakes make up 28.8% of everything recorded on the 2013 MG 3 Form, against 20.9% nationally — 7.9 points above. Have the discs and pads measured rather than glanced at, and ask whether the handbrake holds on a slope.
- Beats its own age and mileage. Once you allow for how old and how far these cars have been driven, the expected pass rate is 78.6% and this one manages 82.4% — 3.8 points ahead of what its age and mileage predict.
- When it fails, it costs. Only 27% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a MG 3 Form? Get an email when these numbers change .
How does the 2013 MG 3 Form compare?
Cars of this age and mileage average 78.6%, so this figure is 3.8 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 80.8%. The median 2013 MG 3 Form in this dataset had covered 66,922 mi.
Pass rates also shift with the test month: tests recorded October–March passed 77.6% of the time, April–September 88.1%.
The single most recorded failure item is "Headlamp lens slightly defective", noted on 4.40% of tests.
- 91 recorded tests behind this page.
- 82.4% overall pass rate, 80.8% on a first attempt.
- Across every year of the MG 3 Form, the average is 82.4% — best year 2013 (82.4%), worst 2013 (82.4%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 91
- Typical mileage (median)
- 66,922 mi
- Make and model
- MG 3 Form
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Headlight Bulb
Usually a DIY or independent-garage job.
Does mileage affect the 3 Form MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 42% so small gaps stay visible.
Regional pass rates for the 3 Form
| Region | Tests | Pass rate |
|---|---|---|
| South East | 26 | 88.5% |
| East Midlands | 17 | 94.1% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2013 3 Form
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2013 3 Form
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the lights 4.4% of tests
“headlamp lens slightly defective”
Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.
-
Check the windscreen 4.4% of tests
“windscreen damaged”
Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.
-
Check the brakes 2.2% of tests
“brake discs in such a condition that it is seriously weakened”
Look through the spokes of each wheel at the pad — less than 3mm of friction material, or a lip on the disc edge, is the usual failure. Check the handbrake holds on a slope with a few clicks, not at the top of its travel.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2013 3 Form through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £40–£102 — and 27% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £40–£102
- Cheapest common item: wipers blade defective
- £8–£22
- Dearest common item: windscreen damaged
- £80–£200
- Common items a careful owner can do at home
- 80%
- Repairs that still cost under £30
- 27%
Estimates from typical UK parts prices, weighted by how often each item appears in 91 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Compare the 2013 MG 3 Form with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2013 cars with a similar record
- Toyota YARIS 82.4%
- SEAT Mii 82.4%
- BMW 3 Series 82.5%
- MINI COOPER Sd 82.3%
- Smart Mcc Fortwo 82.6%
- Toyota Verso 82.2%
Closest pass rates among 2013 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2013 MG 3 Form 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 190 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Brakes | 55 | 28.80% | 20.89% | +7.91 |
| Tyres | 43 | 22.50% | 19.76% | +2.74 |
| Suspension | 38 | 19.90% | 20.98% | −1.08 |
| Lamps, reflectors and electrical equipment | 21 | 11.00% | 12.21% | −1.21 |
| Noise, emissions and leaks | 14 | 7.30% | 5.52% | +1.78 |
| Visibility | 7 | 3.70% | 4.97% | −1.27 |
| Steering | 4 | 2.10% | 2.57% | −0.47 |
| Body, chassis, structure | 3 | 1.60% | 5.57% | −3.97 |
| Non-component advisories | 3 | 1.60% | 4.18% | −2.58 |
| Seat belts and supplementary restraint systems | 2 | 1.00% | 0.82% | +0.18 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Headlamp lens slightly defective Lamps, reflectors and electrical equipment | Minor | 4.4% | £5–25 |
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 4.4% | £80–200 |
| Brake discs in such a condition that it is seriously weakened Brakes | Major | 2.2% | £45–110 |
| Brake discs significantly and obviously worn Brakes | Major | 2.2% | £45–110 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Major | 2.2% | £45–95 |
| Pins and bushes pin or bush excessively worn Suspension | Major | 2.2% | £40–150 |
| Tread depth below requirements of 1.6mm Tyres | Major | 2.2% | £45–95 |
| Wipers blade defective Visibility | Minor | 2.2% | £8–22 |
| Ball joint excessively worn Suspension | Major | 1.1% | £18–45 |
| Battery(ies) leaking Lamps, reflectors and electrical equipment | Major | 1.1% | £60–140 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 23.1% | £45–110 |
| Tread depth below requirements of 1.6mm Tyres | Advisory | 17.6% | £45–95 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 16.5% | £45–95 |
| Coil spring corroded so that its cross sectional area is reduced and seriously weakened Suspension | Advisory | 15.4% | £25–65 |
| Pins and bushes pin or bush excessively worn Suspension | Advisory | 14.3% | £40–150 |
| Rigid brake pipes excessively corroded Brakes | Advisory | 14.3% | £80–180 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 15 | 93.3% | 19,443 mi |
| 30-60k | 24 | 83.3% | 48,349 mi |
| 60-90k | 39 | 84.6% | 75,915 mi |
| 90-120k | 11 | 63.6% | 100,836 mi |
| 120k+ | 2 | 50.0% | 123,370 mi |
Source: 91 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2013 3 Form MOT questions
What is the MOT pass rate for a 2013 MG 3 Form?
82.4% of the 91 2013 MG 3 Form tests in this dataset passed, against a national average of 78.6% for cars first used in 2013. First-attempt pass rate: 80.8%.
What are the most common MOT failures on a 2013 MG 3 Form?
The three most recorded items are headlamp lens slightly defective (4.40%), windscreen damaged but not adversely affecting driver's view (4.40%), brake discs in such a condition that it is seriously weakened (2.20%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2013 MG 3 Form MOT pass rate?
Yes. Cars under 30,000 miles passed 93.3% of the time, falling to 50.0% for those over 120,000 miles. The median 2013 MG 3 Form in this dataset had covered 66,922 mi.
Does the season affect the 2013 MG 3 Form MOT pass rate?
Tests recorded in the winter months (October–March) passed 77.6% of the time; summer months (April–September) passed 88.1%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.