2006 Mcc Smart Roadster Auto — MOT failures & pass rate
Across 348 MOT tests analysed for the 2006 Mcc Smart Roadster Auto, the most common recorded failure areas were lighting & signalling, brakes and suspension. Its pass rate of 78.7% was above the average for cars of a similar age (74.3%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 15.5% | 54 |
| 2 | Brakes | 8.1% | 28 |
| 3 | Suspension | 6.0% | 21 |
| 4 | Emissions & environmental | 3.5% | 12 |
| 5 | Visibility | 3.5% | 12 |
| 6 | Body, structure & corrosion | 2.9% | 10 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Rigid brake pipes | 19 |
| 2 | Stop lamp | 16 |
| 3 | Individual direction indicators | 16 |
| 4 | Headlamp aim | 12 |
| 5 | Horn | 11 |
| 6 | Wipers | 11 |
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 | 31.3% | 109 |
| 2 | Suspension | 25.0% | 87 |
| 3 | Tyres | 17.5% | 61 |
| 4 | Lighting & signalling | 15.8% | 55 |
| 5 | Emissions & environmental | 13.8% | 48 |
| 6 | Other defects | 6.9% | 24 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 138 | 23.9% |
| 60-90k | 111 | 19.8% |
| 90-120k | 61 | 19.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 75 | 18.7% |
| 2022 | 70 | 20.0% |
| 2023 | 76 | 21.1% |
| 2024 | 66 | 24.2% |
| 2025 | 61 | 22.9% |
What to check before buying a 2006 Smart Roadster Auto
Before buying a 2006 Mcc Smart Roadster Auto, focus on the areas it most often fails on. Lighting & signalling accounted for 15.5% of tests for this year.
- Lighting & signalling (15.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (8.1% 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.
- Suspension (6.0% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
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 2006 Mcc Smart Roadster Autos pass their MOT?
78.7% of the 348 2006 Mcc Smart Roadster Auto MOT tests in this dataset passed — a 21.3% fail rate.
What is the most common MOT failure on a 2006 Mcc Smart Roadster Auto?
Lighting & signalling, recorded in 15.5% of tests, followed by brakes (8.1%).
Does the 2006 Smart Roadster Auto get worse with mileage?
Its MOT fail rate rises from 23.9% in the 30-60k band to 19.7% in the 90-120k band.
Methodology & source. Based on 348 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.