HYUNDAI IONIQ (2018)
Running costs, common problems, and reliability data based on 13,632 real MOT tests in 2024.
MOT Pass Rate
90%
Total Tests (2024)
13,632
Avg Mileage
76,532 mi
Est. Annual Cost
£1,582
Is the 2018 HYUNDAI IONIQ reliable?
Excellent reliability. Very few MOT failures. That's 8 points above the national average of 82%. It also outperforms the HYUNDAI brand average of 83%.
At 6 years old, 90% of HYUNDAI IONIQs from 2018 passed their MOT first time in 2024. That's based on 13,632 tests across the UK. The average mileage at this age is 76,532 miles.
How does the 2018 HYUNDAI IONIQ compare?
Mileage Analysis
The average 2018 HYUNDAI IONIQ has 76,532 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 HYUNDAI IONIQ?
The most reliable year is the 2022 model with a 96% MOT pass rate, while the 2016 model has the lowest at 87%. The 2018 sits between the two at 90%.
How much does a 2018 HYUNDAI IONIQ 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.
HYUNDAI IONIQ by Year
Checking a specific HYUNDAI IONIQ?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 HYUNDAI IONIQ
The 2018 HYUNDAI IONIQ is a small family car with a 1580cc hybrid engine. 13,632 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 76,532 miles at 6 years old, HYUNDAI IONIQ owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2018 HYUNDAI IONIQ 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 HYUNDAI IONIQ?
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 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
HYUNDAI IONIQ Reliability Trend
Newer HYUNDAI IONIQs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2018 HYUNDAI IONIQ
At 6 years old, the HYUNDAI IONIQ 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 2022 model has the highest pass rate at 96%. With 13,632 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2018 HYUNDAI IONIQ
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable hybrid cars with similar engines:
- MERCEDES C (2017) 89% pass rate (-1%) from 87,612 tests
- TOYOTA YARIS (2018) 91% pass rate (+1%) from 42,493 tests
- MINI COOPER S (2019) 92% pass rate (+2%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (+4%) from 33,069 tests