KIA NIRO (2018)
Running costs, common problems, and reliability data based on 12,101 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
12,101
Avg Mileage
68,800 mi
Est. Annual Cost
£1,582
Is the 2018 KIA NIRO reliable?
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%. It also outperforms the KIA brand average of 86%.
At 6 years old, 91% of KIA NIROs from 2018 passed their MOT first time in 2024. That's based on 12,101 tests across the UK. The average mileage at this age is 68,800 miles.
How does the 2018 KIA NIRO compare?
Mileage Analysis
The average 2018 KIA NIRO has 68,800 miles on the clock, which is well above the expected 44,400 miles for a 6-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Best year to buy a KIA NIRO?
The most reliable year is the 2020 model with a 93% MOT pass rate, while the 2017 model has the lowest at 88%. The 2018 sits between the two at 91%.
How much does a 2018 KIA NIRO 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.
KIA NIRO by Year
Checking a specific KIA NIRO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 KIA NIRO
The 2018 KIA NIRO is a small family car with a 1580cc hybrid engine. 12,101 of these vehicles were MOT tested in 2024, making it one of the most commonly tested cars on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.
With an average of 68,800 miles at 6 years old, KIA NIRO owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2018 KIA NIRO Fuel Costs
The 1580cc hybrid engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2018 KIA NIRO?
Total estimated annual running cost is £1,582 (£132/month), broken down as £1137 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
KIA NIRO Reliability Trend
The KIA NIRO has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.
Buying a Used 2018 KIA NIRO
At 6 years old, the KIA NIRO 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 2020 model has the highest pass rate at 93%. With 12,101 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2018 KIA NIRO
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable hybrid cars with similar engines:
- MERCEDES C (2017) 89% pass rate (-2%) from 87,612 tests
- TOYOTA YARIS (2018) 91% pass rate (same) from 42,493 tests
- MINI COOPER S (2019) 92% pass rate (+1%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (+3%) from 33,069 tests