BMW 120I (2012)
Running costs, reliability data, and common problems from 38 real MOT tests.
Annual Cost
£1,657
£138/month
MOT Pass Rate
100%
Excellent
Road Tax
£265
Based on CC/year
Insurance
Grp 12-25
1590cc Petrol
Great Choice
100% pass rate, £1657/year to run. 18 points above average.
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Annual Running Costs
~42 mpg
Based on 1590cc
Low estimate due to excellent reliability
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
Excellent reliability. Very few MOT failures. That's 18 points above the national average of 82%. It also outperforms the BMW brand average of 88%.
At 14 years old, 100% of BMW 120Is from 2012 passed their MOT first time in 2026. That's based on 38 tests across the UK. The average mileage at this age is 44,138 miles.
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Mileage Analysis
44,138
Average miles
103,600
Expected for age
The average 2012 BMW 120I has 44,138 miles on the clock, which is significantly below the expected 103,600 miles for a 14-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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About the 2012 BMW 120I
The 2012 BMW 120I is a premium with a 1590cc petrol engine. 38 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 1% of all 2012 cars for reliability.
With an average of 44,138 miles at 14 years old, BMW 120I owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2012 BMW 120I Fuel Costs
The 1590cc 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 2012 BMW 120I?
Total estimated annual running cost is £1,657 (£138/month), broken down as £1137 fuel, £265 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2012 BMW 120I
At 14 years old, the BMW 120I is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. Note: with only 38 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2012 BMW 120I's fuel type, age, and engine size, these are the most likely problem areas to check.
Rust and Corrosion
Watch outAt 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.
Suspension Bushings
Watch outRubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.
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 2012 BMW 120I stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| BMW 120I(2012) | 100% | £1137 | £265 | Grp 12-25 | £1657 |
| VAUXHALL CORSA(2014) | 76% | £1137 | £30 | Grp 8-20 | £1722+£65 |
| FORD FOCUS(2013) | 78% | £1137 | £135 | Grp 12-25 | £1827+£170 |
| NISSAN QASHQAI(2013) | 72% | £1137 | £135 | Grp 12-25 | £1827+£170 |
| VOLKSWAGEN POLO(2011) | 75% | £955 | £30 | Grp 5-15 | £1540-£117 |
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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