Mercedes 280 Slc MOT Pass Rate
Overall pass rate across all manufacture years, based on 59 real MOT test results. Failure rate: 39.0%.
Data from official DVSA MOT testing records
Mercedes 280 Slc MOT Reliability Overview
The Mercedes 280 Slc is a rare vehicle in the UK, with 59 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 61.0% and a failure rate of 39.0%, which is around the UK average of approximately 37%.
Based on this data, the Mercedes 280 Slc earns a "Average" reliability rating. The average Mercedes 280 Slc presents for MOT with approximately 72,088 miles on the clock.
The most common MOT failure for the Mercedes 280 Slc is Suspension, affecting 27.1% of all tests. 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. The second most common issue is Exhaust, Fuel and Emissions at 22.0%. Brakes rounds out the top three at 20.3%. 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
* 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 | Suspension | 40.7% | 24 |
| 2 | Exhaust, Fuel And Emissions | 30.5% | 18 |
| 3 | Brakes | 28.8% | 17 |
| 4 | Lamps, Reflectors And Electrical Equipment | 23.7% | 14 |
| 5 | Tyres | 22.0% | 13 |
| 6 | Seat Belts And Supplementary Restraint Systems | 16.9% | 10 |
| 7 | Registration Plates And Vin | 6.8% | 4 |
| 8 | Driver's View Of The Road | 6.8% | 4 |
| 9 | Steering | 6.8% | 4 |
| 10 | Body, Structure And General Items | 5.1% | 3 |
Failures per 10,000 Miles
avg. 72,088 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 |
|---|---|---|---|
| Suspension | 5.64 | 40.7% | 24 |
| Emissions & Exhaust | 4.23 | 30.5% | 18 |
| Brakes | 4.00 | 28.8% | 17 |
| Lamps & Electrical | 3.29 | 23.7% | 14 |
| Tyres | 3.06 | 22.0% | 13 |
| Seat Belts | 2.35 | 16.9% | 10 |
| Registration Plates and VIN | 0.94 | 6.8% | 4 |
| Visibility | 0.94 | 6.8% | 4 |
| Steering | 0.94 | 6.8% | 4 |
| Body & Structure | 0.71 | 5.1% | 3 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mercedes 280 Slc has 72,088 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 Mercedes 280 Slc has a mileage-adjusted failure rate of 5.41% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Mercedes 280 Slc MOT Data
The Mercedes 280 Slc is a rare vehicle in the UK, with 59 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 61.0% and a failure rate of 39.0%, which is around the UK average of approximately 37%.
For Mercedes 280 Slc owners, these results suggest average reliability — some preparation before MOT can improve pass chances. Focus your pre-MOT checks on suspension and exhaust, fuel and emissions 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 280 Slc is likely to perform.
Suspension — 27.1% of failures
Suspension issues account for 27.1% of MOT failures on the Mercedes 280 Slc. 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.
Exhaust, Fuel and Emissions — 22.0% of failures
Exhaust, Fuel and Emissions issues account for 22.0% of MOT failures on the Mercedes 280 Slc. Emissions failures occur when exhaust gases exceed legal limits for carbon monoxide (CO), hydrocarbons (HC), or particulate matter (diesel). Common causes include faulty oxygen sensors, clogged catalytic converters, or DPF issues on diesel vehicles. Typical repair costs: £100–1,000+. Pre-MOT check: If the engine management light is on, get it diagnosed before the MOT. For diesel cars, ensure the DPF has completed a regeneration cycle. Regular servicing and using premium fuel before the test can help.
Brakes — 20.3% of failures
Brakes issues account for 20.3% of MOT failures on the Mercedes 280 Slc. 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 Mercedes 280 Slc?
Based on 59 (based on limited data) MOT tests in our database, the Mercedes 280 Slc has an overall pass rate of 61.0% (39.0% fail rate).
What are the most common MOT failures on a Mercedes 280 Slc?
The top 3 reasons a Mercedes 280 Slc fails its MOT are: 1. Suspension (27.1%), 2. Exhaust, Fuel and Emissions (22.0%), 3. Brakes (20.3%). Check these areas before booking your MOT.
Is the Mercedes 280 Slc reliable?
With a 39.0% MOT failure rate, the 280 Slc is about average compared to the UK average of ~40%.
What should I check before an MOT on my Mercedes 280 Slc?
Based on failure data, focus on: Suspension (27.1%); Exhaust, Fuel and Emissions (22.0%); Brakes (20.3%). 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.