BMW 6 SERIES (2020)
Running costs, reliability data, and common problems from 662 real MOT tests.
Annual Cost
£1,777
£148/month
MOT Pass Rate
93%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1998cc Petrol
Great Choice
93% pass rate, £1777/year to run. 11 points above average.
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Annual Running Costs
~36 mpg
Flat rate (post-2017)
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 11 points above the national average of 82%. It also outperforms the BMW brand average of 88%.
At 6 years old, 93% of BMW 6 SERIESs from 2020 passed their MOT first time in 2026. That's based on 662 tests across the UK. The average mileage at this age is 38,758 miles.
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How Does It Compare?
Mileage Analysis
38,758
Average miles
44,400
Expected for age
The average 2020 BMW 6 SERIES has 38,758 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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BMW 6 SERIES by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2020 | 93% | 662 | 38,758 mi | |
| 2019 | 92% | 2,297 | 51,326 mi | |
| 2018 | 91% | 3,656 | 56,355 mi | |
| 2017 | 88% | 632 | 62,077 mi | |
| 2014 | 86% | 66 | 87,054 mi | |
| 2013 | 88% | 1,897 | 91,528 mi | |
| 2012 | 89% | 1,275 | 95,998 mi | |
| 2011 | 89% | 247 | 80,577 mi | |
| 2010 | 82% | 127 | 105,279 mi | |
| 2009 | 86% | 125 | 110,442 mi | |
| 2008 | 80% | 171 | 117,234 mi | |
| 2007 | 90% | 203 | 114,661 mi | |
| 2006 | 82% | 288 | 121,301 mi | |
| 2005 | 80% | 147 | 116,696 mi | |
| 1990 | 85% | 39 | 122,050 mi |
Similar Cars to Consider
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About the 2020 BMW 6 SERIES
The 2020 BMW 6 SERIES is a premium with a 1998cc petrol engine. 662 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 38,758 miles at 6 years old, BMW 6 SERIES owners drive about as much as the UK average.
2020 BMW 6 SERIES 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 6 SERIES?
Total estimated annual running cost is £1,777 (£148/month), broken down as £1327 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
BMW 6 SERIES Reliability Trend
Newer BMW 6 SERIESs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Buying a Used 2020 BMW 6 SERIES
At 6 years old, the BMW 6 SERIES 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 6 SERIES'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 6 SERIES stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| BMW 6 SERIES(2020) | 93% | £1327 | £195 | Grp 18-32 | £1777 |
| VOLKSWAGEN GOLF(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£195 |
| FORD KUGA(2018) | 90% | £1137 | £190 | Grp 12-25 | £1582-£195 |
| MINI COOPER(2018) | 92% | £1137 | £190 | Grp 12-25 | £1582-£195 |
| NISSAN QASHQAI(2020) | 93% | £1137 | £190 | Grp 12-25 | £1582-£195 |
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.
Related Bmw Models
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