Common problems
Infiniti Q50 common problems
What MOT testers find on the Infiniti Q50: the parts that fail or get advisories most often at each age, against all cars of the same age. From 8,734 DVSA MOT tests taken 2022 to 2025.
MOT data updated
At 8 years, the most tested age
What stands out
- Brakes fails show up on 7.9 of every 100 MOTs of a Infiniti Q50 at 8 years old (n=2,281), against 4.8 for all cars of that age (n=10,440,457).
- Lights and electrics fails are less common: 4.9 per 100 MOTs against 7.3 for all cars at the same age.
- The fail item testers record most often at 8 years: brake pads under 1.5 mm, on 3.6 per 100 MOTs (all cars 2.0).
- The most common advisory or minor defect: tread depth: worn close to legal limit/worn on edge, on 19.3 per 100 MOTs.
Problems by part at 8 years
How many of every 100 MOTs found a fail, or an advisory or minor defect, in each area. A test with faults in two areas counts in both.
| Area | Fails | All cars | Advisories | All cars |
|---|---|---|---|---|
| Brakes | 7.9 | 4.8 | 25.2 | 19.1 |
| Tyres | 7.9 | 6.3 | 24.6 | 25.2 |
| Suspension | 5.0 | 6.1 | 23.5 | 11.8 |
| Lights and electrics | 4.9 | 7.3 | 2.4 | 3.4 |
| Windscreen, wipers and mirrors | 2.1 | 3.7 | 3.8 | 3.4 |
| Exhaust, emissions and leaks | 1.8 | 2.1 | 2.2 | 2.3 |
| Body and structure | 1.1 | 1.8 | 0.7 | 2.2 |
| Road wheels | 1.0 | 0.3 | 0.2 | 0.7 |
| Number plates and VIN | 0.3 | 0.3 | 1.4 | 1.4 |
| Seat belts and airbags | 0.3 | 0.5 | ||
| Steering | 0.1 | 1.2 | 0.2 | 1.5 |
What testers fail most on the Q50 at 8 years
| Item | Area | Per 100 MOTs | All cars | Typical repair (estimate) |
|---|---|---|---|---|
| Brake pads under 1.5 mm | Brakes | 3.6 | 2.0 | £72 to £174 per axle (rough guide) |
| Tyre tread below 1.6 mm | Tyres | 3.3 | 2.3 | £88 to £145 per tyre |
| Tyre with cords exposed | Tyres | 2.8 | 1.2 | £88 to £145 per tyre |
| Anti-roll bar link worn | Suspension | 2.2 | 0.3 | £33 to £102 per link (rough guide) |
| Wipers not clearing screen | Windscreen, wipers and mirrors | 1.3 | 1.7 | £15 to £30 per blade |
| Handbrake too weak | Brakes | 1.1 | 0.5 | |
| Tyre condition: has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 1.0 | 1.3 | £88 to £145 per tyre |
| Registration plate lamp(s): inoperative in the case of a single lamp or all lamps | Lights and electrics | 0.9 | 0.8 | £10 to £47 per lamp |
| Side/position light not working | Lights and electrics | 0.9 | 1.2 | £10 to £47 per lamp |
Early warnings: advisories and minor defects at 8 years
Advisories and minor defects are recorded, but the car still passes. Across all cars, a part with an advisory or minor defect failed at the next MOT 5.5 times in 100 (n=88,666,940 pairs of consecutive MOTs), against 0.3 times in 100 when the same part had none (n=12,936,860,350).
| Item | Area | Per 100 MOTs | All cars | If it needs replacing (estimate) |
|---|---|---|---|---|
| Tread depth: worn close to legal limit/worn on edge | Tyres | 19.3 | 15.7 | £88 to £145 per tyre |
| Brake pads: wearing thin | Brakes | 15.8 | 8.6 | £72 to £174 per axle (rough guide) |
| Linkage ball joints: ball joint has slight play | Suspension | 13.4 | 0.5 | £33 to £102 per link (rough guide) |
| Brake discs: worn, pitted or scored, but not seriously weakened | Brakes | 9.8 | 8.6 | £148 to £376 per axle (rough guide) |
| Suspension arm ball joint: ball joint has slight play | Suspension | 4.6 | 0.9 | £75 to £237 per side (rough guide) |
| Anti-roll bar ball joint: ball joint has slight play | Suspension | 3.2 | 0.1 | £33 to £102 per link (rough guide) |
| Child Seat fitted not allowing full inspection of adult belt | Other | 2.9 | 2.3 | |
| Tread depth: worn close to legal limit/worn on edge | Tyres | 2.8 | 2.1 | £88 to £145 per tyre |
| Brake discs: worn, but not excessively | Brakes | 2.4 | 2.7 | £148 to £376 per axle (rough guide) |
| Windscreen: damaged but not adversely affecting driver's view | Windscreen, wipers and mirrors | 2.4 | 2.1 |
Repair estimates are a guide for an independent garage: labour at the national median local garage rate (median £78 an hour from 65 garages, ONS price quotes) times estimated labour hours, plus a parts band. Labour hours and most parts bands are estimates, not quotes, and prices vary by model, engine and region. A warning light fault shows the cost of the diagnosis only.
How problems change with age
| Age | Tests (n) | Brakes | Tyres | Suspension |
|---|---|---|---|---|
| 6 years | 1,389 | 8.5 | 5.7 | 2.9 |
| 7 years | 2,117 | 6.7 | 6.1 | 4.6 |
| 8 years | 2,281 | 7.9 | 7.9 | 5.0 |
| 9 years | 1,790 | 8.6 | 7.4 | 7.0 |
| 10 years | 1,157 | 9.1 | 7.4 | 7.7 |
What to check on a viewing
On the Infiniti Q50, testers most often record brake pads under 1.5 mm; tyre tread below 1.6 mm; tyre with cords exposed. Look at these first, then the areas below.
Brakes
- On the test drive the car should stop in a straight line without pulling, juddering or grinding.
- Look at the discs through the wheels for a deep lip, heavy rust or scoring.
- Check that the handbrake or electronic parking brake holds the car on a slope.
- Ask when the pads, discs and brake fluid were last changed, and for the receipts.
Tyres
- Check the tread across the full width of all four tyres, and the spare if there is one.
- Look for cuts, bulges and cracking in the sidewalls.
- Wear on one edge only can point to worn suspension or the tracking being out.
Suspension
- Listen for knocks or clonks over speed bumps and rough roads on the test drive.
- Push down hard on each corner: the car should settle at once rather than keep bouncing.
- Look behind the wheels for broken or heavily rusted coil springs and split rubber bushes.
- Check that the car sits level and that no tyre is worn on one edge only.
Ask for the car's MOT history and service record: advisories that repeat from one year to the next show what has been left. GOV.UK MOT history.
Questions
What are the most common problems on the Infiniti Q50?
At 8 years, the age with the most MOT tests (2,281), the fail items testers record most often on the Infiniti Q50 are brake pads under 1.5 mm (3.6 per 100 MOTs), tyre tread below 1.6 mm (3.3 per 100 MOTs), tyre with cords exposed (2.8 per 100 MOTs). The most common advisories or minor defects are tread depth: worn close to legal limit/worn on edge (19.3) and brake pads: wearing thin (15.8).
Which parts of the Infiniti Q50 fail more often than on other cars?
At 8 years: brakes (7.9 per 100 MOTs against 4.8 for all cars); tyres (7.9 per 100 MOTs against 6.3 for all cars). Compared with 10,440,457 MOTs of all cars the same age.
Infiniti Q50 problems by area
More on the Infiniti Q50
Other Infiniti models
The all cars figures cover all class 4 vehicles (cars and light vans) tested at the same age.
Looking at a Infiniti Q50?
These figures describe the model, not the car in front of you. Found one you might buy? See what the VetTheCar Buying Report covers, or use the tools that work without a registration.
See a sample report Car tools · MOT fail rates by model · Compare models by MOT record
Repair estimates: ONS consumer price quotes for local garage labour (09/2025 to 08/2026), the MOT inspection manual for defect wording, and estimated labour hours and parts bands. Not affiliated with or endorsed by ONS.
Source
Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA anonymised MOT test data, class 4 normal MOT tests, 2022 to 2025. MOT data updated 28 September 2026.
Not affiliated with or endorsed by DVSA. How we calculate these figures · Data sources