Toyota Prius Plus MOT Failures
An analysis of 570 real DVSA MOT tests on the Toyota Prius Plus — what fails, how often, and how that compares to every other car on UK roads.
Where the Toyota Prius Plus fails its MOT
The single biggest MOT failure point on the Toyota Prius Plus is rear registration plate lamp does not illuminat... — this model is 23 times more likely to fail on this item than the average car on UK roads. That makes it a significant weak point for anyone buying or owning this model. Across 570 MOT tests, 5.89% of all Toyota Prius Plus tests recorded this as a failure.
Lighting faults are usually straightforward to fix (bulbs, connectors, earth points) but can indicate deeper wiring issues on older cars. Check all lights including fog lamps, number plate lights, and dashboard warning lights.
How failures change with mileage
The Toyota Prius Plus's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.
Under 60,000 miles
At this mileage, most failures are either design-related or caused by age rather than wear. Components like bushes and drop links may not have been replaced yet, and original-fit parts can deteriorate even on low-mileage cars that spend a lot of time sitting.
The standout failure at this mileage is rear registration plate lamp or light source mi... at 6.3x the fleet average.
60,000 to 100,000 miles
This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.
The standout failure at this mileage is rear registration plate lamp does not illuminat... at 23x the fleet average.
The shift from rear registration plate lamp or light source mi... at lower mileages to rear registration plate lamp does not illuminat... at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.
What to check before buying a Toyota Prius Plus
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Toyota Prius Plus:
Lights & Electrics — check for rear registration plate lamp does not illuminat..., rear registration plate lamp or light source mi....
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. Enter any reg into our free car check to see the complete picture.
Looking at a specific Toyota Prius Plus?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Toyota Prius Plus MOT FAQs
What are the most common MOT failures on a Toyota Prius Plus?
Based on 570 DVSA MOT tests, the most common failure is rear registration plate lamp does not illuminat... — at 23x the national fleet average. Other frequent failures include rear registration plate lamp or light source mi....
Is the Toyota Prius Plus reliable based on MOT data?
The Toyota Prius Plus has 2 categories where it fails more often than average. The main concern is rear registration plate lamp does not illuminat.... Always check a specific car's full history before buying.
What MOT failures should I expect at high mileage?
The most common high-mileage failures include rear registration plate lamp does not illuminat..., rear registration plate lamp or light source mi....
How do I check a Toyota Prius Plus's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.