2003 Mercedes Clk270 MOT Pass Rate
Pass rate for Clk270 models manufactured in 2003, based on 34 real MOT test results.
Data from official DVSA MOT testing records
2003 Mercedes Clk270 MOT Analysis
The 2003 Mercedes Clk270 has an MOT pass rate of 64.7% based on 34 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 103,927 miles on the odometer. With a 35.3% failure rate, the 2003 Clk270 is rated as "Average" for MOT reliability.
The leading cause of MOT failure for the 2003 Mercedes Clk270 is Noise, emissions and leaks, responsible for 2.9% of failures. 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 range from £100–1,000+. Suspension is the second most common issue at 2.9%.
Top failures specific to 2003 models only. The overall Clk270 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Noise, Emissions And Leaks | 2.9% | 1 |
| 2 | Suspension | 2.9% | 1 |
Failures per 10,000 Miles
avg. 103,927 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 |
|---|---|---|---|
| Noise, emissions and leaks | 0.28 | 2.9% | 1 |
| Suspension | 0.28 | 2.9% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2003 Mercedes Clk270 has an MOT pass rate of 64.7% based on 34 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 103,927 miles on the odometer. With a 35.3% failure rate, the 2003 Clk270 is rated as "Average" for MOT reliability.
If you own or are considering buying a 2003 Mercedes Clk270, budget for potential repairs before each MOT. Before your MOT, pay particular attention to noise, emissions and leaks: 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. With an average mileage of 103,927 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Noise, emissions and leaks — 2.9% of failures
Noise, emissions and leaks issues account for 2.9% of MOT failures on 2003 Mercedes Clk270 models. 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.
Suspension — 2.9% of failures
Suspension issues account for 2.9% of MOT failures on 2003 Mercedes Clk270 models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.