2004 Toyota Sienta MOT Pass Rate
Pass rate for Sienta models manufactured in 2004, based on 51 real MOT test results.
Data from official DVSA MOT testing records
2004 Toyota Sienta MOT Analysis
The 2004 Toyota Sienta has an MOT pass rate of 76.5% based on 51 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 100,630 miles on the odometer. With a 23.5% failure rate, the 2004 Sienta is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2004 Toyota Sienta is Road Wheels, responsible for 3.9% of failures. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs range from £100–400 per wheel. Tyres is the second most common issue at 2.0%. Body, chassis, structure follows at 2.0%.
Top failures specific to 2004 models only. The overall Sienta 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 | Road Wheels | 3.9% | 2 |
| 2 | Tyres | 2.0% | 1 |
| 3 | Body, Chassis, Structure | 2.0% | 1 |
| 4 | Brakes | 2.0% | 1 |
| 5 | Noise, Emissions And Leaks | 2.0% | 1 |
Failures per 10,000 Miles
avg. 100,630 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 |
|---|---|---|---|
| Wheels | 0.39 | 3.9% | 2 |
| Tyres | 0.19 | 2.0% | 1 |
| Body & Structure | 0.19 | 2.0% | 1 |
| Brakes | 0.19 | 2.0% | 1 |
| Noise, emissions and leaks | 0.19 | 2.0% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2004 Toyota Sienta has an MOT pass rate of 76.5% based on 51 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 100,630 miles on the odometer. With a 23.5% failure rate, the 2004 Sienta is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2004 Toyota Sienta, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to road wheels: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels. With an average mileage of 100,630 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Road Wheels — 3.9% of failures
Road Wheels issues account for 3.9% of MOT failures on 2004 Toyota Sienta models. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs: £100–400 per wheel. Pre-MOT check: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels.
Tyres — 2.0% of failures
Tyres issues account for 2.0% of MOT failures on 2004 Toyota Sienta 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.
Body, chassis, structure — 2.0% of failures
Body, chassis, structure issues account for 2.0% of MOT failures on 2004 Toyota Sienta 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.