INFINITI Q50 (2018)
Running costs, common problems, and reliability data based on 522 real MOT tests in 2024.
MOT Pass Rate
87%
Total Tests (2024)
522
Avg Mileage
56,669 mi
Est. Annual Cost
£2,187
Is the 2018 INFINITI Q50 reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 6 years old, 87% of INFINITI Q50s from 2018 passed their MOT first time in 2024. That's based on 522 tests across the UK. The average mileage at this age is 56,669 miles.
How does the 2018 INFINITI Q50 compare?
Mileage Analysis
The average 2018 INFINITI Q50 has 56,669 miles on the clock, which is above the expected 44,400 miles for a 6-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a INFINITI Q50?
The most reliable year is the 2017 model with a 88% MOT pass rate, while the 2014 model has the lowest at 82%. The 2018 sits between the two at 87%.
How much does a 2018 INFINITI Q50 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
INFINITI Q50 by Year
Checking a specific INFINITI Q50?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 INFINITI Q50
The 2018 INFINITI Q50 is a premium performance with a 2997cc petrol engine. 522 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. It sits in the bottom 76% of 2018 cars for MOT pass rates.
With an average of 56,669 miles at 6 years old, INFINITI Q50 owners cover more miles than the average driver.
2018 INFINITI Q50 Fuel Costs
The 2997cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2018 INFINITI Q50?
Total estimated annual running cost is £2,187 (£182/month), broken down as £1592 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
INFINITI Q50 Reliability Trend
Newer INFINITI Q50s show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2018 INFINITI Q50
At 6 years old, the INFINITI Q50 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2017 model has the highest pass rate at 88%.
Alternatives to the 2018 INFINITI Q50
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- BMW 5 SERIES (2018) 91% pass rate (+4%) from 40,272 tests
- LAND ROVER RANGE ROVER SPORT (2018) 93% pass rate (+6%) from 34,257 tests
- BMW X3 (2019) 92% pass rate (+5%) from 32,937 tests
- MERCEDES GLC (2019) 93% pass rate (+6%) from 30,341 tests