Fiat 126 MOT pass rate & common failures
The Fiat 126 appears in 1,235 MOT tests spanning model years 1980–2021, and 80.7% of them passed. That is 1.7 percentage points better than all cars of a similar age, which fail at 21.0%. Its most common failure areas are lighting & signalling, brakes and emissions & environmental.
What the MOT record shows
Lighting & signalling dominates the failure mix at 16.4% of all tests — 9.4 points clear of brakes, so it is the first thing to check.
At component level the recurring items are headlamp aim, position lamp and washers — headlamp aim alone was recorded 119 times.
Mileage matters less than usual here: the 126 fails 19.1% of the time in the 0-30k band and 17.0% at 60-90k, a spread of only 2.1 points.
Advisories point at the next bill rather than this one: suspension was flagged on 21.4% of tests without failing them.
How it compares
By model year
Every 126 model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 1986 | 68 | 80.9% | 19.1% | Lighting & signalling |
| 1987 | 54 | 79.6% | 20.4% | Lighting & signalling |
| 1988 | 113 | 74.3% | 25.7% | Lighting & signalling |
| 1989 | 126 | 83.3% | 16.7% | Lighting & signalling |
| 1990 | 174 | 82.2% | 17.8% | Lighting & signalling |
| 1991 | 198 | 82.8% | 17.2% | Lighting & signalling |
| 1996 | 39 | 71.8% | 28.2% | Lighting & signalling |
| 1997 | 37 | 81.1% | 18.9% | Lighting & signalling |
| 1998 | 45 | 80.0% | 20.0% | Lighting & signalling |
| 1999 | 69 | 76.8% | 23.2% | Brakes |
| 2000 | 45 | 71.1% | 28.9% | Lighting & signalling |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 16.4% | 202 |
| 2 | Brakes | 7.0% | 86 |
| 3 | Emissions & environmental | 5.9% | 73 |
| 4 | Suspension | 5.8% | 72 |
| 5 | Visibility | 5.8% | 72 |
| 6 | Body, structure & corrosion | 4.1% | 51 |
| 7 | Steering | 2.2% | 27 |
| 8 | Seat belts & restraints | 1.5% | 18 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 119 |
| 2 | Position lamp | 70 |
| 3 | Washers | 65 |
| 4 | Service brake performance | 56 |
| 5 | Stop lamp | 52 |
| 6 | Headlamp | 51 |
| 7 | Non catalyst emissions | 48 |
| 8 | Wheel bearings | 47 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 21.4% | 264 |
| 2 | Emissions & environmental | 14.4% | 178 |
| 3 | Brakes | 13.6% | 168 |
| 4 | Tyres | 7.8% | 96 |
| 5 | Steering | 6.1% | 75 |
| 6 | Body, structure & corrosion | 5.5% | 68 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 513 | 19.1% |
| 30-60k | 534 | 20.6% |
| 60-90k | 147 | 17.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 274 | 17.9% |
| 2022 | 262 | 23.3% |
| 2023 | 220 | 13.6% |
| 2024 | 239 | 22.2% |
| 2025 | 240 | 18.8% |
What to check before buying a Fiat 126
- Lighting & signalling (16.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (7.0% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Emissions & environmental (5.9% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the Fiat 126?
80.7% of the 1,235 Fiat 126 MOT tests in this dataset passed, a 19.3% fail rate, across model years 1980–2021.
What does the Fiat 126 most often fail its MOT on?
Lighting & signalling, recorded in 16.4% of tests, then brakes (7.0%).
How much does mileage affect 126 MOT results?
Fail rates run at 19.1% for cars in the 0-30k band and 17.0% for 60-90k, a 2.1-point difference.
Methodology & source. Based on 1,235 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.