Toyota Sienna MOT Pass Rate
Overall pass rate across all manufacture years, based on 1,051 real MOT test results. Failure rate: 34.2%.
Data from official DVSA MOT testing records
Toyota Sienna MOT Reliability Overview
The Toyota Sienna is a niche vehicle in the UK, with 1,051 MOT test results recorded in our database spanning 15 manufacture years. It has an overall MOT pass rate of 65.8% and a failure rate of 34.2%, which is slightly above the UK average of approximately 37%.
Based on this data, the Toyota Sienna earns a "Good" reliability rating. The average Toyota Sienna presents for MOT with approximately 84,475 miles on the clock. Manufacture year matters: 2018 models achieve the highest pass rate at 83.3%, while 2003 models have the lowest at 36.4%. This 46.9 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Toyota Sienna is Lamps, Reflectors and Electrical Equipment, affecting 28.8% of all tests. 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. The second most common issue is Lamps, reflectors and electrical equipment at 19.4%. Suspension rounds out the top three at 16.0%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Pass Rate by Manufacture Year
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Lamps, Reflectors And Electrical Equipment | 58.3% | 613 |
| 2 | Suspension | 17.5% | 184 |
| 3 | Brakes | 17.4% | 183 |
| 4 | Tyres | 15.5% | 163 |
| 5 | Steering | 4.4% | 46 |
| 6 | Driver's View Of The Road | 4.3% | 45 |
| 7 | Non-component Advisories | 3.6% | 38 |
| 8 | Registration Plates And Vin | 2.0% | 21 |
| 9 | Noise, Emissions And Leaks | 2.0% | 21 |
| 10 | Visibility | 1.6% | 17 |
| 11 | Body, Chassis, Structure | 1.3% | 14 |
| 12 | Exhaust, Fuel And Emissions | 1.0% | 11 |
| 13 | Seat Belts And Supplementary Restraint Systems | 1.0% | 10 |
| 14 | Body, Structure And General Items | 0.8% | 8 |
Failures per 10,000 Miles
avg. 84,475 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 |
|---|---|---|---|
| Lamps & Electrical | 6.91 | 58.3% | 613 |
| Suspension | 2.07 | 17.5% | 184 |
| Brakes | 2.06 | 17.4% | 183 |
| Tyres | 1.84 | 15.5% | 163 |
| Visibility | 0.70 | 5.9% | 62 |
| Steering | 0.52 | 4.4% | 46 |
| Non-component advisories | 0.43 | 3.6% | 38 |
| Body & Structure | 0.25 | 2.1% | 22 |
| Registration Plates and VIN | 0.24 | 2.0% | 21 |
| Noise, emissions and leaks | 0.24 | 2.0% | 21 |
| Emissions & Exhaust | 0.12 | 1.0% | 11 |
| Seat Belts | 0.11 | 1.0% | 10 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Toyota Sienna has 84,475 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Toyota Sienna has a mileage-adjusted failure rate of 4.05% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Toyota Sienna MOT Data
The Toyota Sienna is a niche vehicle in the UK, with 1,051 MOT test results recorded in our database spanning 15 manufacture years. It has an overall MOT pass rate of 65.8% and a failure rate of 34.2%, which is slightly above the UK average of approximately 37%.
For Toyota Sienna owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on lamps, reflectors and electrical equipment and lamps, reflectors and electrical equipment for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Sienna is likely to perform.
Lamps, Reflectors and Electrical Equipment — 28.8% of failures
Lamps, Reflectors and Electrical Equipment issues account for 28.8% of MOT failures on the Toyota Sienna. 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.
Lamps, reflectors and electrical equipment — 19.4% of failures
Lamps, reflectors and electrical equipment issues account for 19.4% of MOT failures on the Toyota Sienna. 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.
Suspension — 16.0% of failures
Suspension issues account for 16.0% of MOT failures on the Toyota Sienna. 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.
Frequently Asked Questions
What is the MOT pass rate for the Toyota Sienna?
Based on 1,051 MOT tests in our database, the Toyota Sienna has an overall pass rate of 65.8% (34.2% fail rate).
What are the most common MOT failures on a Toyota Sienna?
The top 3 reasons a Toyota Sienna fails its MOT are: 1. Lamps, Reflectors and Electrical Equipment (28.8%), 2. Lamps, reflectors and electrical equipment (19.4%), 3. Suspension (16.0%). Check these areas before booking your MOT.
Is the Toyota Sienna reliable?
With a 34.2% MOT failure rate, the Sienna is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Toyota Sienna?
Based on failure data, focus on: Lamps, Reflectors and Electrical Equipment (28.8%); Lamps, reflectors and electrical equipment (19.4%); Suspension (16.0%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.