Smart Roadster Speedsilver Auto MOT Pass Rate
Overall pass rate across all manufacture years, based on 1,640 real MOT test results. Failure rate: 34.9%.
Data from official DVSA MOT testing records
Smart Roadster Speedsilver Auto MOT Reliability Overview
The Smart Roadster Speedsilver Auto is a niche vehicle in the UK, with 1,640 MOT test results recorded in our database spanning 3 manufacture years. It has an overall MOT pass rate of 65.1% and a failure rate of 34.9%, which is slightly above the UK average of approximately 37%.
Based on this data, the Smart Roadster Speedsilver Auto earns a "Good" reliability rating. The average Smart Roadster Speedsilver Auto presents for MOT with approximately 57,754 miles on the clock. Manufacture year matters: 2006 models achieve the highest pass rate at 73.0%, while 2004 models have the lowest at 64.7%. This 8.3 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Smart Roadster Speedsilver Auto is Brakes, affecting 32.0% of all tests. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. The second most common issue is Lamps, Reflectors and Electrical Equipment at 26.8%. Suspension rounds out the top three at 24.0%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Best Year to Buy
📈 How Each Vintage Ages
📉 How Age Affects Reliability
MOT failure rate by vehicle age for the Smart Roadster Speedsilver Auto. The dashed red line marks when the manufacturer warranty typically expires (3 years).
Line chart showing MOT failure rate by vehicle age from 5 to 11 years, with warranty expiry marked at 3 years.
💡 What does the warranty cliff mean?
The Smart Roadster Speedsilver Auto shows a relatively stable failure rate after warranty — the change of 0% is negligible. Peak failure occurs at age 11 (43.1% fail rate).
Note: pass rates may improve for very old vehicles due to survivorship bias — only well-maintained cars remain on the road.
Pass Rate by Manufacture Year
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Lamps, Reflectors And Electrical Equipment | 45.0% | 738 |
| 2 | Brakes | 34.3% | 563 |
| 3 | Suspension | 26.3% | 431 |
| 4 | Tyres | 17.2% | 282 |
| 5 | Driver's View Of The Road | 7.7% | 126 |
| 6 | Steering | 5.7% | 93 |
| 7 | Visibility | 3.4% | 55 |
| 8 | Exhaust, Fuel And Emissions | 2.4% | 39 |
| 9 | Noise, Emissions And Leaks | 2.3% | 37 |
| 10 | Body, Structure And General Items | 1.6% | 27 |
| 11 | Body, Chassis, Structure | 1.0% | 16 |
| 12 | Road Wheels | 0.9% | 15 |
| 13 | Seat Belts And Supplementary Restraint Systems | 0.8% | 13 |
| 14 | Registration Plates And Vin | 0.8% | 13 |
Failures per 10,000 Miles
avg. 57,754 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Lamps & Electrical | 7.79 | 45.0% | 738 |
| Brakes | 5.94 | 34.3% | 563 |
| Suspension | 4.55 | 26.3% | 431 |
| Tyres | 2.98 | 17.2% | 282 |
| Visibility | 1.91 | 11.1% | 181 |
| Steering | 0.98 | 5.7% | 93 |
| Body & Structure | 0.46 | 2.6% | 43 |
| Emissions & Exhaust | 0.41 | 2.4% | 39 |
| Noise, emissions and leaks | 0.39 | 2.3% | 37 |
| Wheels | 0.16 | 0.9% | 15 |
| Seat Belts | 0.14 | 0.8% | 13 |
| Registration Plates and VIN | 0.14 | 0.8% | 13 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Smart Roadster Speedsilver Auto has 57,754 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Smart Roadster Speedsilver Auto has a mileage-adjusted failure rate of 6.04% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Smart Roadster Speedsilver Auto MOT Data
The Smart Roadster Speedsilver Auto is a niche vehicle in the UK, with 1,640 MOT test results recorded in our database spanning 3 manufacture years. It has an overall MOT pass rate of 65.1% and a failure rate of 34.9%, which is slightly above the UK average of approximately 37%.
For Smart Roadster Speedsilver Auto owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes and lamps, reflectors and electrical equipment for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Roadster Speedsilver Auto is likely to perform.
Brakes — 32.0% of failures
Brakes issues account for 32.0% of MOT failures on the Smart Roadster Speedsilver Auto. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Lamps, Reflectors and Electrical Equipment — 26.8% of failures
Lamps, Reflectors and Electrical Equipment issues account for 26.8% of MOT failures on the Smart Roadster Speedsilver Auto. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Suspension — 24.0% of failures
Suspension issues account for 24.0% of MOT failures on the Smart Roadster Speedsilver Auto. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Frequently Asked Questions
What is the MOT pass rate for the Smart Roadster Speedsilver Auto?
Based on 1,640 MOT tests in our database, the Smart Roadster Speedsilver Auto has an overall pass rate of 65.1% (34.9% fail rate).
What are the most common MOT failures on a Smart Roadster Speedsilver Auto?
The top 3 reasons a Smart Roadster Speedsilver Auto fails its MOT are: 1. Brakes (32.0%), 2. Lamps, Reflectors and Electrical Equipment (26.8%), 3. Suspension (24.0%). Check these areas before booking your MOT.
Is the Smart Roadster Speedsilver Auto reliable?
With a 34.9% MOT failure rate, the Roadster Speedsilver Auto is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Smart Roadster Speedsilver Auto?
Based on failure data, focus on: Brakes (32.0%); Lamps, Reflectors and Electrical Equipment (26.8%); Suspension (24.0%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.