2009 BMW 523 MOT Pass Rate
Pass rate for 523 models manufactured in 2009, based on 1,438 real MOT test results.
Data from official DVSA MOT testing records
This page shows all 523 cars tested in 2009. Want to see how cars built in 2009 hold up over time?
View 2009 BMW 523 vintage page → (76.1% current pass rate)2009 BMW 523 MOT Analysis
The 2009 BMW 523 has an MOT pass rate of 78.5% based on 1,438 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 68,879 miles on the odometer. With a 21.5% failure rate, the 2009 523 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2009 BMW 523 is Noise, emissions and leaks, responsible for 1.6% 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+. Suspension is the second most common issue at 1.1%. Brakes follows at 0.8%.
Top failures specific to 2009 models only. The overall 523 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 | Noise, Emissions And Leaks | 1.6% | 23 |
| 2 | Suspension | 1.1% | 16 |
| 3 | Brakes | 0.8% | 12 |
| 4 | Lamps, Reflectors And Electrical Equipment | 0.8% | 11 |
| 5 | Tyres | 0.3% | 4 |
| 6 | Visibility | 0.3% | 4 |
| 7 | Steering | 0.1% | 2 |
| 8 | Identification Of The Vehicle | 0.1% | 1 |
| 9 | Body, Chassis, Structure | 0.1% | 1 |
Failures per 10,000 Miles
avg. 68,879 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 |
|---|---|---|---|
| Noise, emissions and leaks | 0.23 | 1.6% | 23 |
| Suspension | 0.16 | 1.1% | 16 |
| Brakes | 0.12 | 0.8% | 12 |
| Lamps & Electrical | 0.11 | 0.8% | 11 |
| Tyres | 0.04 | 0.3% | 4 |
| Visibility | 0.04 | 0.3% | 4 |
| Steering | 0.02 | 0.1% | 2 |
| Identification of the vehicle | 0.01 | 0.1% | 1 |
| Body & Structure | 0.01 | 0.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2009 BMW 523 has an MOT pass rate of 78.5% based on 1,438 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 68,879 miles on the odometer. With a 21.5% failure rate, the 2009 523 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2009 BMW 523, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to noise, emissions and leaks: 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. At 68,879 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Noise, emissions and leaks — 1.6% of failures
Noise, emissions and leaks issues account for 1.6% of MOT failures on 2009 BMW 523 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.
Suspension — 1.1% of failures
Suspension issues account for 1.1% of MOT failures on 2009 BMW 523 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.
Brakes — 0.8% of failures
Brakes issues account for 0.8% of MOT failures on 2009 BMW 523 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.