Smart Forfour Coolstyle 90 S-a MOT Pass Rate
Overall pass rate across all manufacture years, based on 1,480 real MOT test results. Failure rate: 29.7%.
Data from official DVSA MOT testing records
Smart Forfour Coolstyle 90 S-a MOT Reliability Overview
The Smart Forfour Coolstyle 90 S-a is a niche vehicle in the UK, with 1,480 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 70.3% and a failure rate of 29.7%, which is above the UK average of approximately 37%.
Based on this data, the Smart Forfour Coolstyle 90 S-a earns a "Very Good" reliability rating. The average Smart Forfour Coolstyle 90 S-a presents for MOT with approximately 57,987 miles on the clock. Manufacture year matters: 2006 models achieve the highest pass rate at 71.6%, while 2007 models have the lowest at 64.5%. This 7.1 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Smart Forfour Coolstyle 90 S-a is Tyres, affecting 17.0% of all tests. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. The second most common issue is Lamps, Reflectors and Electrical Equipment at 14.4%. Brakes rounds out the top three at 13.9%. 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
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 | 27.6% | 409 |
| 2 | Tyres | 18.8% | 278 |
| 3 | Brakes | 14.5% | 215 |
| 4 | Suspension | 10.5% | 155 |
| 5 | Driver's View Of The Road | 8.6% | 128 |
| 6 | Visibility | 3.5% | 52 |
| 7 | Noise, Emissions And Leaks | 2.6% | 38 |
| 8 | Body, Chassis, Structure | 1.9% | 28 |
| 9 | Steering | 1.7% | 25 |
| 10 | Non-component Advisories | 1.6% | 24 |
| 11 | Identification Of The Vehicle | 1.5% | 22 |
| 12 | Road Wheels | 1.1% | 16 |
| 13 | Registration Plates And Vin | 0.9% | 14 |
| 14 | Exhaust, Fuel And Emissions | 0.8% | 12 |
Failures per 10,000 Miles
avg. 57,987 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 | 4.76 | 27.6% | 409 |
| Tyres | 3.24 | 18.8% | 278 |
| Brakes | 2.51 | 14.5% | 215 |
| Visibility | 2.10 | 12.1% | 180 |
| Suspension | 1.81 | 10.5% | 155 |
| Noise, emissions and leaks | 0.44 | 2.6% | 38 |
| Body & Structure | 0.33 | 1.9% | 28 |
| Steering | 0.29 | 1.7% | 25 |
| Non-component advisories | 0.28 | 1.6% | 24 |
| Identification of the vehicle | 0.26 | 1.5% | 22 |
| Wheels | 0.19 | 1.1% | 16 |
| Registration Plates and VIN | 0.16 | 0.9% | 14 |
| Emissions & Exhaust | 0.14 | 0.8% | 12 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Smart Forfour Coolstyle 90 S-a has 57,987 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 Forfour Coolstyle 90 S-a has a mileage-adjusted failure rate of 5.12% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Smart Forfour Coolstyle 90 S-a MOT Data
The Smart Forfour Coolstyle 90 S-a is a niche vehicle in the UK, with 1,480 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 70.3% and a failure rate of 29.7%, which is above the UK average of approximately 37%.
For Smart Forfour Coolstyle 90 S-a owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on tyres 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 Forfour Coolstyle 90 S-a is likely to perform.
Tyres — 17.0% of failures
Tyres issues account for 17.0% of MOT failures on the Smart Forfour Coolstyle 90 S-a. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Lamps, Reflectors and Electrical Equipment — 14.4% of failures
Lamps, Reflectors and Electrical Equipment issues account for 14.4% of MOT failures on the Smart Forfour Coolstyle 90 S-a. 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.
Brakes — 13.9% of failures
Brakes issues account for 13.9% of MOT failures on the Smart Forfour Coolstyle 90 S-a. 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).
Frequently Asked Questions
What is the MOT pass rate for the Smart Forfour Coolstyle 90 S-a?
Based on 1,480 MOT tests in our database, the Smart Forfour Coolstyle 90 S-a has an overall pass rate of 70.3% (29.7% fail rate).
What are the most common MOT failures on a Smart Forfour Coolstyle 90 S-a?
The top 3 reasons a Smart Forfour Coolstyle 90 S-a fails its MOT are: 1. Tyres (17.0%), 2. Lamps, Reflectors and Electrical Equipment (14.4%), 3. Brakes (13.9%). Check these areas before booking your MOT.
Is the Smart Forfour Coolstyle 90 S-a reliable?
With a 29.7% MOT failure rate, the Forfour Coolstyle 90 S-a is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Smart Forfour Coolstyle 90 S-a?
Based on failure data, focus on: Tyres (17.0%); Lamps, Reflectors and Electrical Equipment (14.4%); Brakes (13.9%). 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.