2003 Mazda B-series MOT Pass Rate
Pass rate for B-series models manufactured in 2003, based on 2,009 real MOT test results.
Data from official DVSA MOT testing records
This page shows all B-series cars tested in 2003. Want to see how cars built in 2003 hold up over time?
View 2003 Mazda B-series vintage page → (55.8% current pass rate)2003 Mazda B-series MOT Analysis
The 2003 Mazda B-series has an MOT pass rate of 52.8% based on 2,009 tests — below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 114,724 miles on the odometer. With a 47.2% failure rate, the 2003 B-series is rated as "Poor" for MOT reliability.
The leading cause of MOT failure for the 2003 Mazda B-series is Suspension, responsible for 4.9% 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. Lamps, reflectors and electrical equipment is the second most common issue at 4.8%. Body, chassis, structure follows at 4.6%.
Top failures specific to 2003 models only. The overall B-series 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 | 4.9% | 98 |
| 2 | Lamps, Reflectors And Electrical Equipment | 4.8% | 96 |
| 3 | Body, Chassis, Structure | 4.6% | 93 |
| 4 | Brakes | 4.6% | 93 |
| 5 | Tyres | 2.8% | 57 |
| 6 | Visibility | 1.5% | 30 |
| 7 | Identification Of The Vehicle | 0.7% | 15 |
| 8 | Noise, Emissions And Leaks | 0.5% | 11 |
| 9 | Seat Belts And Supplementary Restraint Systems | 0.5% | 10 |
| 10 | Steering | 0.4% | 9 |
| 11 | Non-component Advisories | 0.3% | 7 |
Failures per 10,000 Miles
avg. 114,724 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 | 0.43 | 4.9% | 98 |
| Lamps & Electrical | 0.42 | 4.8% | 96 |
| Body & Structure | 0.40 | 4.6% | 93 |
| Brakes | 0.40 | 4.6% | 93 |
| Tyres | 0.25 | 2.8% | 57 |
| Visibility | 0.13 | 1.5% | 30 |
| Identification of the vehicle | 0.07 | 0.7% | 15 |
| Noise, emissions and leaks | 0.05 | 0.5% | 11 |
| Seat Belts | 0.04 | 0.5% | 10 |
| Steering | 0.04 | 0.4% | 9 |
| Non-component advisories | 0.03 | 0.3% | 7 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2003 Mazda B-series has an MOT pass rate of 52.8% based on 2,009 tests — below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 114,724 miles on the odometer. With a 47.2% failure rate, the 2003 B-series is rated as "Poor" for MOT reliability.
If you own or are considering buying a 2003 Mazda B-series, be prepared for above-average maintenance costs. 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 114,724 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Suspension — 4.9% of failures
Suspension issues account for 4.9% of MOT failures on 2003 Mazda B-series 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.
Lamps, reflectors and electrical equipment — 4.8% of failures
Lamps, reflectors and electrical equipment issues account for 4.8% of MOT failures on 2003 Mazda B-series 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.
Body, chassis, structure — 4.6% of failures
Body, chassis, structure issues account for 4.6% of MOT failures on 2003 Mazda B-series models. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs: £100–500+. Pre-MOT check: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.