1999 General Motors Blazer MOT Pass Rate
Pass rate for Blazer models manufactured in 1999, based on 52 real MOT test results.
Data from official DVSA MOT testing records
1999 General Motors Blazer MOT Analysis
The 1999 General Motors Blazer has an MOT pass rate of 73.1% based on 52 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 82,499 miles on the odometer. With a 26.9% failure rate, the 1999 Blazer is rated as "Very Good" for MOT reliability.
The leading cause of MOT failure for the 1999 General Motors Blazer is Suspension, responsible for 9.6% of failures. 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 range from £200–500. Exhaust, Fuel and Emissions is the second most common issue at 9.6%. Lamps, Reflectors and Electrical Equipment follows at 7.7%.
Top failures specific to 1999 models only. The overall Blazer 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 | Suspension | 9.6% | 5 |
| 2 | Exhaust, Fuel And Emissions | 9.6% | 5 |
| 3 | Lamps, Reflectors And Electrical Equipment | 7.7% | 4 |
| 4 | Non-component Advisories | 7.7% | 4 |
| 5 | Brakes | 7.7% | 4 |
| 6 | Steering | 5.8% | 3 |
| 7 | Body, Structure And General Items | 3.8% | 2 |
| 8 | Tyres | 1.9% | 1 |
Failures per 10,000 Miles
avg. 82,499 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 |
|---|---|---|---|
| Suspension | 1.17 | 9.6% | 5 |
| Emissions & Exhaust | 1.17 | 9.6% | 5 |
| Lamps & Electrical | 0.93 | 7.7% | 4 |
| Non-component advisories | 0.93 | 7.7% | 4 |
| Brakes | 0.93 | 7.7% | 4 |
| Steering | 0.70 | 5.8% | 3 |
| Body & Structure | 0.47 | 3.8% | 2 |
| Tyres | 0.23 | 1.9% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1999 General Motors Blazer has an MOT pass rate of 73.1% based on 52 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 82,499 miles on the odometer. With a 26.9% failure rate, the 1999 Blazer is rated as "Very Good" for MOT reliability.
If you own or are considering buying a 1999 General Motors Blazer, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to suspension: 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. With an average mileage of 82,499 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Suspension — 9.6% of failures
Suspension issues account for 9.6% of MOT failures on 1999 General Motors Blazer 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.
Exhaust, Fuel and Emissions — 9.6% of failures
Exhaust, Fuel and Emissions issues account for 9.6% of MOT failures on 1999 General Motors Blazer 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.
Lamps, Reflectors and Electrical Equipment — 7.7% of failures
Lamps, Reflectors and Electrical Equipment issues account for 7.7% of MOT failures on 1999 General Motors Blazer 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.