1999 Mercedes Cl 500 MOT Pass Rate
Pass rate for Cl 500 models manufactured in 1999, based on 188 real MOT test results.
Data from official DVSA MOT testing records
1999 Mercedes Cl 500 MOT Analysis
The 1999 Mercedes Cl 500 has an MOT pass rate of 64.4% based on 188 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 93,087 miles on the odometer. With a 35.6% failure rate, the 1999 Cl 500 is rated as "Average" for MOT reliability.
The leading cause of MOT failure for the 1999 Mercedes Cl 500 is Lamps, reflectors and electrical equipment, responsible for 1.6% of failures. 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 range from £5–50. Non-component advisories is the second most common issue at 1.1%. Suspension follows at 1.1%.
Top failures specific to 1999 models only. The overall Cl 500 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 | Lamps, Reflectors And Electrical Equipment | 1.6% | 3 |
| 2 | Non-component Advisories | 1.1% | 2 |
| 3 | Suspension | 1.1% | 2 |
| 4 | Brakes | 1.1% | 2 |
| 5 | Body, Chassis, Structure | 0.5% | 1 |
Failures per 10,000 Miles
avg. 93,087 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 | 0.17 | 1.6% | 3 |
| Non-component advisories | 0.11 | 1.1% | 2 |
| Suspension | 0.11 | 1.1% | 2 |
| Brakes | 0.11 | 1.1% | 2 |
| Body & Structure | 0.06 | 0.5% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1999 Mercedes Cl 500 has an MOT pass rate of 64.4% based on 188 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 93,087 miles on the odometer. With a 35.6% failure rate, the 1999 Cl 500 is rated as "Average" for MOT reliability.
If you own or are considering buying a 1999 Mercedes Cl 500, budget for potential repairs before each MOT. Before your MOT, pay particular attention to lamps, reflectors and electrical equipment: 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. With an average mileage of 93,087 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Lamps, reflectors and electrical equipment — 1.6% of failures
Lamps, reflectors and electrical equipment issues account for 1.6% of MOT failures on 1999 Mercedes Cl 500 models. 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.
Non-component advisories — 1.1% of failures
Non-component advisories issues account for 1.1% of MOT failures on 1999 Mercedes Cl 500 models. Non-component advisories issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Suspension — 1.1% of failures
Suspension issues account for 1.1% of MOT failures on 1999 Mercedes Cl 500 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.