2010 Toyota Iq — MOT failures & pass rate
The 2010 Toyota Iq passed 84.8% of its 21,872 recorded MOT tests. That is 9.1 percentage points better than city cars of a similar age, which fail at 24.3%. Failures cluster in lighting & signalling, visibility and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (8.5%) and visibility (5.6%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, position lamp and headlamp aim — wipers alone was recorded 949 times.
A 150k+ example is materially riskier than a 0-30k one: 23.7% versus 7.6%.
Advisories point at the next bill rather than this one: brakes was flagged on 28.1% of tests without failing them.
The trend is worsening — 13.7% of tests failed in 2021 against 16.8% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.5% | 1,852 |
| 2 | Visibility | 5.6% | 1,215 |
| 3 | Brakes | 5.1% | 1,119 |
| 4 | Suspension | 4.5% | 994 |
| 5 | Tyres | 3.4% | 737 |
| 6 | Emissions & environmental | 1.8% | 393 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 949 |
| 2 | Position lamp | 690 |
| 3 | Headlamp aim | 590 |
| 4 | Headlamp | 590 |
| 5 | Rigid brake pipes | 545 |
| 6 | Washers | 533 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 28.1% | 6,157 |
| 2 | Tyres | 23.3% | 5,102 |
| 3 | Suspension | 16.0% | 3,492 |
| 4 | Lighting & signalling | 8.3% | 1,814 |
| 5 | Other defects | 7.0% | 1,532 |
| 6 | Body, structure & corrosion | 5.9% | 1,283 |
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 | 1,836 | 7.6% |
| 30-60k | 6,946 | 12.3% |
| 60-90k | 7,574 | 16.5% |
| 90-120k | 3,887 | 18.2% |
| 120-150k | 1,254 | 22.6% |
| 150k+ | 367 | 23.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 4,362 | 13.7% |
| 2022 | 4,336 | 13.4% |
| 2023 | 4,471 | 15.5% |
| 2024 | 4,381 | 16.6% |
| 2025 | 4,322 | 16.8% |
What to check before buying a 2010 Iq
On a 2010 Iq, lighting & signalling is what the MOT record says goes wrong most — it appeared in 8.5% of tests. Check these areas before you commit.
- Lighting & signalling (8.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (5.6% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
- Brakes (5.1% 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.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2010 Toyota Iqs pass their MOT?
84.8% of the 21,872 2010 Toyota Iq MOT tests in this dataset passed — a 15.2% fail rate.
What is the most common MOT failure on a 2010 Toyota Iq?
Lighting & signalling, recorded in 8.5% of tests, followed by visibility (5.6%).
Does the 2010 Iq get worse with mileage?
Its MOT fail rate rises from 7.6% in the 0-30k band to 23.7% in the 150k+ band.
Methodology & source. Based on 21,872 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.