INFINITI Q30 (2018)
Running costs, common problems, and reliability data based on 530 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
530
Avg Mileage
46,589 mi
Est. Annual Cost
£1,690
Is the 2018 INFINITI Q30 reliable?
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the INFINITI brand average of 87%.
At 6 years old, 93% of INFINITI Q30s from 2018 passed their MOT first time in 2024. That's based on 530 tests across the UK. The average mileage at this age is 46,589 miles.
How does the 2018 INFINITI Q30 compare?
Mileage Analysis
The average 2018 INFINITI Q30 has 46,589 miles on the clock, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.
How much does a 2018 INFINITI Q30 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 Q30 by Year
Checking a specific INFINITI Q30?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 INFINITI Q30
The 2018 INFINITI Q30 is a premium with a 2143cc diesel engine. 530 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.
With an average of 46,589 miles at 6 years old, INFINITI Q30 owners drive about as much as the UK average.
2018 INFINITI Q30 Fuel Costs
The 2143cc diesel engine offers a reasonable balance between performance and economy. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2018 INFINITI Q30?
Total estimated annual running cost is £1,690 (£141/month), broken down as £1245 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
INFINITI Q30 Reliability Trend
Newer INFINITI Q30s show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Buying a Used 2018 INFINITI Q30
At 6 years old, the INFINITI Q30 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Alternatives to the 2018 INFINITI Q30
The INFINITI Q30 is actually the most reliable option among similar diesel premiums from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2018) 92% pass rate (-1%) from 111,972 tests
- FORD TRANSIT (2017) 81% pass rate (-12%) from 80,031 tests
- FORD KUGA (2019) 91% pass rate (-2%) from 72,831 tests
- KIA SPORTAGE (2016) 85% pass rate (-8%) from 66,048 tests