Infiniti Q50 reliability, MPG and running costs
Figures updated
The Infiniti Q50 is a car. In 2024 MOT tests it scored 120 for reliability (100 is average), ranking 149 of 442, and 21.8% failed first time against a UK average of 28.5%. Its most common MOT failure is brake pads (4.0% of tests).
Ranked 149 of 442 cars in the 2024 MOT Reliability League
In 2024, 2,481 Infiniti Q50s aged 3 to 20 had an MOT and 21.8% failed first time (UK average 28.5%). Taking age and mileage into account, the Infiniti Q50 is 17% less likely to fail than the average car of the same age and mileage.
First-time fail rate
21.8%
UK 28.5%
Fail rate at 3 years
–
UK 12.7%
Average miles a year
9,800
Typical age at test: 8 years
Infiniti Q50 MOT failure rate by age
Most common Infiniti Q50 MOT faults
- Brake pads: less than 1.5 mm thick4.0% of tests
- Tread depth: tread depth below requirements of 1.6mm2.7% of tests
- Linkage ball joints: ball joint excessively worn2.4% of tests
- Ball joint: ball joint excessively worn1.9% of tests
- Condition: has ply or cords exposed1.9% of tests
- Wipers: does not clear the windscreen effectively1.5% of tests
What the Infiniti Q50 fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Brakes | 8.1% | ▲ 1.4× as often |
| Tyres | 6.8% | About average |
| Suspension | 5.7% | ▼ 17% less often |
| Lights and electrics | 5.3% | ▼ 37% less often |
| Visibility | 2.1% | ▼ 45% less often |
| Exhaust and emissions | 1.5% | ▼ 42% less often |
| Wheels | 1.1% | ▲ 2.8× as often |
| Body and structure | 1.0% | ▼ 54% less often |
| Seat belts and airbags | 0.4% | ▼ 37% less often |
| Steering | 0.2% | ▼ 90% less often |
What MPG does the Infiniti Q50 do?
Official economy for the Infiniti Q50 ranges from 41.5 to 65.7mpg across the 10 versions listed by the Vehicle Certification Agency (2016–2018). A typical petrol version manages 44.1mpg and a typical diesel 62.8mpg. Expect 10–15% less in real-world driving.
Work out a journey's fuel costHow much is road tax on a Infiniti Q50?
Any Infiniti Q50 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A Infiniti Q50 registered between March 2001 and March 2017 is taxed on its CO2: £35 to £275 a year.
Work out tax for a specific carInfiniti Q50 specs and running costs
Official figures for 10 versions sold in the UK between 2016 and 2018.
Fuel types
Diesel, Hybrid, Petrol
Official economy
41.5–65.7 mpg
CO2
114–159 g/km
| Version | Fuel | Economy | CO2 | Car tax |
|---|---|---|---|---|
| Q50 Euro6, 2016 Q50 2.2d 17 inch wheelM6 · listed 2018 | Diesel | 65.7 mpg | 114g | £200 |
| Q50 Euro6, 2016 Q50 2.2d 18-19 inch wheelM6 · listed 2018 | Diesel | 62.8 mpg | 118g | £200 |
| Q50 Euro6, 2016 Q50 2.2d 17 inch wheelA7 · listed 2018 | Diesel | 62.8 mpg | 119g | £200 |
| Q50 Euro6, 2016 Q50 2.2d 18-19 inch wheelA7 · listed 2018 | Diesel | 61.4 mpg | 123g | £200 |
| Q50 Euro6, 2016 Q50S HybridA7 · listed 2018 | Hybrid | 45.6 mpg | 144g | £200 |
| Q50 Euro6, 2016 Q50S Hybrid AWDA7 · listed 2018 | Hybrid | 41.5 mpg | 159g | £200 |
| Q50 Euro6, 2016 Q50 2.0t 17 inch wheelA7 · listed 2018 | Petrol | 44.8 mpg | 146g | £200 |
| Q50 Euro6, 2016 Q50 2.0t 18 inch wheelA7 · listed 2018 | Petrol | 44.1 mpg | 149g | £200 |
| Q50 Euro6, 2016 Q50 2.0t 19 inch wheelA7 · listed 2018 | Petrol | 43.5 mpg | 151g | £200 |
| Q50 Euro6, 2016 Q50 2.2d 17-18 inch wheelM6 · listed 2016 | Diesel | 62.8 mpg | 118g | £35 |
Economy and CO2 are official NEDC (before 2018) or WLTP figures. Car tax is the yearly rate at current rates for a car first registered in the year listed, before any expensive car supplement.
What a Infiniti Q50 costs to fuel
- petrol, typical official 44.1mpg…
- diesel, typical official 62.8mpg…
Official figures are usually 10–15% better than real-world driving.
Work out a journey in a Infiniti Q50Buying a used Infiniti Q50?
Check the MOT history of the exact car: every result, advisory and mileage reading, free.
Other Infiniti models
Frequently asked questions
›Is the Infiniti Q50 reliable?
Its MOT record is better than average: the Infiniti Q50 is 17% less likely to fail than the average car of the same age and mileage, with a reliability score of 120 in our 2024 league (100 is average).
›What are common problems with the Infiniti Q50?
The most common MOT fault is “Brake pads: less than 1.5 mm thick”, found in 4.0% of tests. It fails on wheels and brakes more often than similar cars.
›What MPG does the Infiniti Q50 do?
Official economy for the Infiniti Q50 ranges from 41.5 to 65.7mpg across the 10 versions listed by the Vehicle Certification Agency (2016–2018). A typical petrol version manages 44.1mpg and a typical diesel 62.8mpg. Expect 10–15% less in real-world driving.
›How much is road tax on a Infiniti Q50?
Any Infiniti Q50 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A Infiniti Q50 registered between March 2001 and March 2017 is taxed on its CO2: £35 to £275 a year.
›How many Infiniti Q50s fail their MOT?
21.8% of Infiniti Q50s aged 3 to 20 failed their MOT first time in 2024.
Sources: DVSA anonymised MOT tests 2024, all versions of the Infiniti Q50 combined (Open Government Licence v3.0); official economy and CO2 from Vehicle Certification Agency data, © Crown copyright. VCA cannot accept liability for its accuracy. How we calculate the league.