SEAT MII (2018)
Running costs, common problems, and reliability data based on 1,975 real MOT tests in 2024.
MOT Pass Rate
89%
Total Tests (2024)
1,975
Avg Mileage
33,651 mi
Est. Annual Cost
£1,550
Is the 2018 SEAT MII reliable?
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%. It also outperforms the SEAT brand average of 85%.
At 6 years old, 89% of SEAT MIIs from 2018 passed their MOT first time in 2024. That's based on 1,975 tests across the UK. The average mileage at this age is 33,651 miles.
How does the 2018 SEAT MII compare?
Mileage Analysis
The average 2018 SEAT MII has 33,651 miles on the clock, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a SEAT MII?
The most reliable year is the 2019 model with a 93% MOT pass rate, while the 2012 model has the lowest at 81%. The 2018 sits between the two at 89%.
How much does a 2018 SEAT MII 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.
SEAT MII by Year
Checking a specific SEAT MII?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 SEAT MII
The 2018 SEAT MII is a city car with a 999cc petrol engine. 1,975 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model falls short of that benchmark.
With an average of 33,651 miles at 6 years old, SEAT MII owners tend to use this car less than the typical driver.
2018 SEAT MII Fuel Costs
The modest 999cc petrol engine keeps fuel costs low, which is a real advantage for a city car. Expect around 50 mpg in mixed driving, which works out to roughly £955 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 SEAT MII?
Total estimated annual running cost is £1,550 (£129/month), broken down as £955 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
SEAT MII Reliability Trend
Newer SEAT MIIs show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Buying a Used 2018 SEAT MII
At 6 years old, the SEAT MII 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 2019 model has the highest pass rate at 93%.
Alternatives to the 2018 SEAT MII
The SEAT MII is actually the most reliable option among similar petrol city cars from this era. Here are comparable petrol cars with similar engines:
- FORD FIESTA (2016) 81% pass rate (-8%) from 205,128 tests
- VAUXHALL CORSA (2016) 81% pass rate (-8%) from 133,045 tests
- NISSAN QASHQAI (2017) 86% pass rate (-3%) from 100,176 tests
- VAUXHALL ASTRA (2016) 85% pass rate (-4%) from 92,988 tests