2009 Subaru Impreza Wrx Sti 330s MOT Pass Rate
Pass rate for Impreza Wrx Sti 330s models manufactured in 2009, based on 30 real MOT test results.
Data from official DVSA MOT testing records
2009 Subaru Impreza Wrx Sti 330s MOT Analysis
The 2009 Subaru Impreza Wrx Sti 330s has an MOT pass rate of 90.0% based on 30 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 34,802 miles on the odometer. With a 10.0% failure rate, the 2009 Impreza Wrx Sti 330s is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2009 Subaru Impreza Wrx Sti 330s is Exhaust, Fuel and Emissions, responsible for 10.0% 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+.
Top failures specific to 2009 models only. The overall Impreza Wrx Sti 330s 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 | Exhaust, Fuel And Emissions | 10.0% | 3 |
Failures per 10,000 Miles
avg. 34,802 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 |
|---|---|---|---|
| Emissions & Exhaust | 2.87 | 10.0% | 3 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2009 Subaru Impreza Wrx Sti 330s has an MOT pass rate of 90.0% based on 30 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 34,802 miles on the odometer. With a 10.0% failure rate, the 2009 Impreza Wrx Sti 330s is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2009 Subaru Impreza Wrx Sti 330s, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to exhaust, fuel and emissions: 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 relatively low average mileage of 34,802 miles, many of these vehicles are still in good mechanical condition.
Exhaust, Fuel and Emissions — 10.0% of failures
Exhaust, Fuel and Emissions issues account for 10.0% of MOT failures on 2009 Subaru Impreza Wrx Sti 330s 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.