Toyota iQ Reliability: Common Problems and Years to Avoid
What the Toyota iQ fails its MOT on, with rough repair costs, and how each model year's MOT pass rate compares with other cars of the same age. Based on 28,440 MOT tests across 6 model years (DVSA data for tests carried out in 2024, retests included).
Segment: city car | Fuel: Petrol
85%
Toyota iQ pass rate
84%
Toyota average
82%
All-model average
The Toyota iQ has an average MOT pass rate of 85%, which is 1 point above the Toyota average and 3 points above the average across all models in our data. Newer Toyota iQs pass their MOT more often than older ones, by 4 percentage points on average, which is mostly down to age and wear.
Check Your Toyota iQ's MOT History
Enter your reg plate to see the specific issues found on your car, plus a health score and running cost estimate.
What the Toyota iQ Fails Its MOT On
Of the 4,347 MOT tests on the Toyota iQ that failed at the first attempt in 2025, the share that failed on each part of the test, next to the share for all cars and vans of the same ages. A test that failed on two areas counts in both.
Lights and electrics
43%Cars and vans the same age: 45% · Typical repair £15-£200
Suspension
28%Cars and vans the same age: 40% (the iQ fails on this less often) · Typical repair £150-£600
Windscreen, wipers and mirrors
23%Cars and vans the same age: 15% (the iQ fails on this more often) · Typical repair £10-£350
Brakes
23%Cars and vans the same age: 24% · Typical repair £80-£450
Tyres
14%Cars and vans the same age: 18% (the iQ fails on this less often) · Typical repair £50-£300
The 3 single faults it failed on most
- Position lamp: not working (13% of failed tests, lights and electrics)
- Wipers: does not clear the windscreen effectively (12% of failed tests, windscreen, wipers and mirrors)
- Steering linkage ball joint dust cover no longer keeps dirt out (9.8% of failed tests, suspension)
Source: CarCostCheck analysis of DVSA anonymised MOT test results and failure items for 2025: first attempt at each MOT, fail and pass-after-repair defects, DVSA's defect categories (names shortened). Repair costs are rough UK ranges, not quotes. Method and national figures: MOT failure reasons 2025.
Buying a Toyota iQ? Check it first
See that car's own MOT history and mileage free, then check it for outstanding finance, an insurance write-off and a stolen record before you pay.
History check £4.99, one-off. No subscription.
Toyota iQ Years to Avoid
Every car in the 2024 MOT data was tested at the same age as the other cars first registered that year, so each iQ year is compared with all cars from the same year. Years with 1,000+ tests that were at least three years old are included.
Failed more often than cars their age
No year passed 3 or more points less often than other cars of the same age.
A lower pass rate means that year failed its MOT more often in 2024; it does not mean every car from that year is bad. Old cars still on the road are often the best-kept ones, which can lift the pass rates of the oldest years. How a car has been looked after matters more, so check the MOT history of the car you are looking at.
Toyota iQ Reliability by Year
MOT pass rate for each model year, from DVSA data for tests carried out in 2024 (retests included). Newer cars usually pass more often simply because they are younger. All Cars is the pass rate of every car first registered that year, with the gap in points. Highest and lowest are marked among years with 100+ tests that were at least three years old when tested. Fuel and engine size are a guide only.
Toyota iQ Running Costs
Want to know the full annual running costs for the Toyota iQ? Including fuel, road tax, the MOT and predicted repairs based on MOT pass rates, plus an estimated insurance group.
View Toyota iQ Running CostsCar history check for £4.99
Finance, stolen and write-off checks
Outstanding finance with the lender's details, stolen, write-off and keeper changes. One payment, no subscription.
Comparing checks first? See the cheapest car check in the UK and the best car check providers compared.
Toyota iQ FAQ
What are the most common Toyota iQ problems?
In 2025, MOT tests on the Toyota iQ that failed at the first attempt most often failed on lights and electrics (43% of the 4,347 failed tests), suspension (28%) and windscreen, wipers and mirrors (23%). The single most common fault was "Position lamp: not working" (13%). Across 28,440 MOT tests (DVSA MOT data for tests in 2024, retests included), 85% ended in a pass.
Is the Toyota iQ reliable?
The Toyota iQ has an average MOT pass rate of 85%, from 28,440 MOT tests (DVSA MOT data for tests in 2024, retests included). Comparing each model year with all cars first registered the same year, so that age is allowed for, it passed 9 points more often on average, a better than average result for its age.
Which Toyota iQ years should I avoid?
No Toyota iQ year with 1,000+ tests passed 3 or more points less often than all cars first registered the same year (DVSA MOT data for tests in 2024, retests included). The years that passed most often for their age were the 2009 (84% of 10,585 tests passed, against 75% for all 2009 cars), the 2010 (84% of 6,321 tests passed, against 75% for all 2010 cars) and the 2011 (86% of 4,215 tests passed, against 77% for all 2011 cars). A year's pass rate does not tell you about one car, so check the MOT history of the car you are buying.
How much does it cost to fix common Toyota iQ faults?
As a rough guide, brake work on a Toyota iQ typically costs £80-£450 and suspension repairs £150-£600, while exhaust and emissions fixes can cost £80-£800. Lighting and wiper fixes are usually under £200.
Check a Specific Toyota iQ
Enter any reg plate to see the exact MOT history, defects found, health score, and running cost estimate for that specific car.
Other Toyota Models
Common problems pages for other Toyota models