CarCostCheck

SEAT LEON (2018)

Running costs, common problems, and reliability data based on 37,787 real MOT tests in 2024.

Share:XFacebookWhatsApp

MOT Pass Rate

88%

Total Tests (2024)

37,787

Avg Mileage

53,378 mi

Est. Annual Cost

£1,732

Is the 2018 SEAT LEON reliable?

Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.

At 6 years old, 88% of SEAT LEONs from 2018 passed their MOT first time in 2024. That's based on 37,787 tests across the UK. The average mileage at this age is 53,378 miles.

How does the 2018 SEAT LEON compare?

Rank among all 2018 cars432th out of 649(top 67%)
Rank among all SEAT models152th out of 311(top 49%)
vs national average+6% (82% avg)
vs 2018 cars average-1% (89% avg)
vs SEAT average+3% (85% avg)

Mileage Analysis

The average 2018 SEAT LEON has 53,378 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 SEAT LEON?

The most reliable year is the 2020 model with a 90% MOT pass rate, while the 2006 model has the lowest at 74%. The 2018 sits between the two at 88%.

How much does a 2018 SEAT LEON cost to run?

⛽Fuel (Petrol, 1395cc)
£1,137
🏛️Road Tax
£190
🔧MOT Test
£55
🛠️Predicted Repairs
£350
Total per year£1,732
Per month£144/mo

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.

SEAT LEON by Year

YearPass RateTestsAvg Mileage
202185%18429,531 mi
202090%13,84038,299 mi
201988%33,66245,808 mi
201888%37,78753,378 mi
201788%32,09263,602 mi
201687%28,07872,877 mi
201586%30,31183,849 mi
201485%33,35993,735 mi
201383%21,374100,080 mi
201279%16,909108,558 mi
201178%12,613114,006 mi
201077%11,322120,467 mi
200977%9,868119,895 mi
200876%9,717124,433 mi
200775%8,629129,414 mi
200674%5,613129,640 mi
200576%3,477130,247 mi
200477%2,724136,378 mi
200376%2,090129,241 mi
200276%1,025126,696 mi
200175%431128,387 mi
200076%92108,063 mi

Checking a specific SEAT LEON?

Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.

GB

Free instant check using official DVSA and DVLA data

About the 2018 SEAT LEON

The 2018 SEAT LEON is a small family car with a 1395cc petrol engine. 37,787 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 falls short of that benchmark.

With an average of 53,378 miles at 6 years old, SEAT LEON owners cover more miles than the average driver.

2018 SEAT LEON Fuel Costs

The 1395cc petrol 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 petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2018 SEAT LEON?

Total estimated annual running cost is £1,732 (£144/month), broken down as £1137 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.

SEAT LEON Reliability Trend

Newer SEAT LEONs show better MOT pass rates than older ones, with an average improvement of 9 percentage points.

Buying a Used 2018 SEAT LEON

At 6 years old, the SEAT LEON 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 90%. With 37,787 MOT tests in our data, there's strong statistical confidence in these figures.

Alternatives to the 2018 SEAT LEON

The SEAT LEON is actually the most reliable option among similar petrol small family cars from this era. Here are comparable petrol cars with similar engines: