1994 Mercedes 300 G Wagon MOT Pass Rate
Pass rate for 300 G Wagon models manufactured in 1994, based on 178 real MOT test results.
Data from official DVSA MOT testing records
1994 Mercedes 300 G Wagon MOT Analysis
The 1994 Mercedes 300 G Wagon has an MOT pass rate of 54.5% based on 178 tests — below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 128,659 miles on the odometer. With a 45.5% failure rate, the 1994 300 G Wagon is rated as "Poor" for MOT reliability.
The leading cause of MOT failure for the 1994 Mercedes 300 G Wagon is Brakes, responsible for 5.1% of failures. 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 range from £150–400. Lamps, reflectors and electrical equipment is the second most common issue at 3.9%. Steering follows at 2.2%.
Top failures specific to 1994 models only. The overall 300 G Wagon 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 | Brakes | 5.1% | 9 |
| 2 | Lamps, Reflectors And Electrical Equipment | 3.9% | 7 |
| 3 | Steering | 2.2% | 4 |
| 4 | Suspension | 1.7% | 3 |
| 5 | Body, Chassis, Structure | 1.1% | 2 |
| 6 | Noise, Emissions And Leaks | 1.1% | 2 |
| 7 | Tyres | 0.6% | 1 |
| 8 | Seat Belts And Supplementary Restraint Systems | 0.6% | 1 |
Failures per 10,000 Miles
avg. 128,659 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Brakes | 0.39 | 5.1% | 9 |
| Lamps & Electrical | 0.31 | 3.9% | 7 |
| Steering | 0.17 | 2.2% | 4 |
| Suspension | 0.13 | 1.7% | 3 |
| Body & Structure | 0.09 | 1.1% | 2 |
| Noise, emissions and leaks | 0.09 | 1.1% | 2 |
| Tyres | 0.04 | 0.6% | 1 |
| Seat Belts | 0.04 | 0.6% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1994 Mercedes 300 G Wagon has an MOT pass rate of 54.5% based on 178 tests — below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 128,659 miles on the odometer. With a 45.5% failure rate, the 1994 300 G Wagon is rated as "Poor" for MOT reliability.
If you own or are considering buying a 1994 Mercedes 300 G Wagon, be prepared for above-average maintenance costs. Before your MOT, pay particular attention to brakes: 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). With an average mileage of 128,659 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Brakes — 5.1% of failures
Brakes issues account for 5.1% of MOT failures on 1994 Mercedes 300 G Wagon models. 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 — 3.9% of failures
Lamps, reflectors and electrical equipment issues account for 3.9% of MOT failures on 1994 Mercedes 300 G Wagon 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.
Steering — 2.2% of failures
Steering issues account for 2.2% of MOT failures on 1994 Mercedes 300 G Wagon models. Steering failures include excessive play in the steering wheel, leaking power steering fluid, worn track rod ends, and damaged steering rack. These affect vehicle control and are closely related to suspension wear. Typical repair costs: £150–600. Pre-MOT check: Check for excessive steering wheel play (more than a few inches of free movement). Listen for whining from the power steering pump. Look for fluid leaks under the car near the front wheels.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.