BMW 318I SPORT AUTO (2020)
Running costs, reliability data, and common problems from 113 real MOT tests.
Annual Cost
£1,927
£161/month
MOT Pass Rate
88%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1998cc Petrol
Solid Option
88% pass rate, £1927/year to run. 6 points above average.
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Annual Running Costs
~36 mpg
Flat rate (post-2017)
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 6 years old, 88% of BMW 318I SPORT AUTOs from 2020 passed their MOT first time in 2026. That's based on 113 tests across the UK. The average mileage at this age is 36,502 miles.
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How Does It Compare?
Mileage Analysis
36,502
Average miles
44,400
Expected for age
The average 2020 BMW 318I SPORT AUTO has 36,502 miles on the clock, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.
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Best Year to Buy?
The most reliable year is the 2021 model with a 93% MOT pass rate, while the 2020 model has the lowest at 88%. Consider a different year if reliability is a priority.
Similar Cars to Consider
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About the 2020 BMW 318I SPORT AUTO
The 2020 BMW 318I SPORT AUTO is a premium with a 1998cc petrol engine. 113 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 84% of 2020 cars for MOT pass rates.
With an average of 36,502 miles at 6 years old, BMW 318I SPORT AUTO owners drive about as much as the UK average.
2020 BMW 318I SPORT AUTO Fuel Costs
The 1998cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2020 BMW 318I SPORT AUTO?
Total estimated annual running cost is £1,927 (£161/month), broken down as £1327 fuel, £195 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.
Buying a Used 2020 BMW 318I SPORT AUTO
At 6 years old, the BMW 318I SPORT AUTO offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
Based on the 2020 BMW 318I SPORT AUTO's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 6 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2020 BMW 318I SPORT AUTO stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| BMW 318I SPORT AUTO(2020) | 88% | £1327 | £195 | Grp 18-32 | £1927 |
| VOLKSWAGEN GOLF(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£345 |
| FORD KUGA(2018) | 90% | £1137 | £190 | Grp 12-25 | £1582-£345 |
| MINI COOPER(2018) | 92% | £1137 | £190 | Grp 12-25 | £1582-£345 |
| NISSAN QASHQAI(2020) | 93% | £1137 | £190 | Grp 12-25 | £1582-£345 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
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