1998 Vauxhall Omega Gls Dti 16v MOT Pass Rate
Pass rate for Omega Gls Dti 16v models manufactured in 1998, based on 54 real MOT test results.
Data from official DVSA MOT testing records
1998 Vauxhall Omega Gls Dti 16v MOT Analysis
The 1998 Vauxhall Omega Gls Dti 16v has an MOT pass rate of 53.7% based on 54 tests — below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 140,745 miles on the odometer. With a 46.3% failure rate, the 1998 Omega Gls Dti 16v is rated as "Poor" for MOT reliability.
The leading cause of MOT failure for the 1998 Vauxhall Omega Gls Dti 16v is Tyres, responsible for 3.7% of failures. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs range from £50–200 per tyre. Exhaust, Fuel and Emissions is the second most common issue at 1.9%.
Top failures specific to 1998 models only. The overall Omega Gls Dti 16v 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 | Tyres | 3.7% | 2 |
| 2 | Exhaust, Fuel And Emissions | 1.9% | 1 |
Failures per 10,000 Miles
avg. 140,745 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 |
|---|---|---|---|
| Tyres | 0.26 | 3.7% | 2 |
| Emissions & Exhaust | 0.13 | 1.9% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1998 Vauxhall Omega Gls Dti 16v has an MOT pass rate of 53.7% based on 54 tests — below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 140,745 miles on the odometer. With a 46.3% failure rate, the 1998 Omega Gls Dti 16v is rated as "Poor" for MOT reliability.
If you own or are considering buying a 1998 Vauxhall Omega Gls Dti 16v, be prepared for above-average maintenance costs. Before your MOT, pay particular attention to tyres: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating. With an average mileage of 140,745 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Tyres — 3.7% of failures
Tyres issues account for 3.7% of MOT failures on 1998 Vauxhall Omega Gls Dti 16v models. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Exhaust, Fuel and Emissions — 1.9% of failures
Exhaust, Fuel and Emissions issues account for 1.9% of MOT failures on 1998 Vauxhall Omega Gls Dti 16v 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.