BMW 6 Series (2020)

Estimated running costs and MOT pass rates from 662 MOT tests in 2024.

Annual Cost

£2,086

£174/month

MOT Pass Rate

93%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 18-32

1998cc Petrol

Great Choice

93% pass rate, £2,086/year to run. 11 points above average.

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Petrol1998cc6 years old662 tests39k miles avg

Annual Running Costs

Fuel (Petrol, 1998cc)

~36 mpg

£1,631

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,086

Per month£174/mo

Per week£40/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).

Reliability Verdict

93% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 11 points above the average of 82% across all models in our data. It also outperforms the BMW brand average of 88%.

93% of MOT tests on BMW 6 Seriess from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 662 tests across the UK, retests included. The average mileage recorded at those tests was 38,758 miles.

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How Does It Compare?

Rank among 2020 models1022nd of 2,554(top half)

Rank among BMW models369th of 1,548(top 24%)

vs average of all models+11%(82% avg)

vs 2020 models average+1%(92% avg)

vs BMW average+5%(88% avg)

Mileage Analysis

38,758

Average miles

29,600

Expected for age

The average 2020 BMW 6 Series had 38,758 miles on the clock at its 2024 MOT, which is above the expected 29,600 miles for a 4-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

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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

Volkswagen Golf

2019 · 1498cc Petrol

£1,853/year

92%

-1%

Ford Kuga

2018 · 1499cc Petrol

£1,853/year

90%

-3%

MINI Cooper

2018 · 1499cc Petrol

£1,853/year

92%

-1%

Nissan Qashqai

2020 · 1598cc Petrol

£1,853/year

93%

same

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About the 2020 BMW 6 Series

The 2020 BMW 6 Series is a premium car. Our records list a 1998cc petrol engine, though engines vary between versions. 662 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. Among all models from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.

With an average of 38,758 miles recorded at its 2024 MOT tests, BMW 6 Series owners cover more miles than the average driver.

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 £1,631 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2020 BMW 6 Series?

Total estimated annual running cost is £2,086 (£174/month), broken down as £1,631 fuel, £200 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 pass their MOT more often than older ones, by 7 percentage points on average, which is mostly down to age and wear.

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

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

Timing Chain / Belt

Watch out

At 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 risk

Always 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 estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
BMW 6 Series(2020)	93%	£1,631	£200	Grp 18-32	£2,086
Volkswagen Golf(2019)	92%	£1,398	£200	Grp 12-25	£1,853-£233
Ford Kuga(2018)	90%	£1,398	£200	Grp 12-25	£1,853-£233
MINI Cooper(2018)	92%	£1,398	£200	Grp 12-25	£1,853-£233
Nissan Qashqai(2020)	93%	£1,398	£200	Grp 12-25	£1,853-£233

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2020 BMW 6 Series

Is the 2020 BMW 6 Series reliable?

Excellent reliability. Very few MOT failures. 93% of MOT tests on 2020 BMW 6 Seriess ended in a pass, from 662 tests (DVSA MOT data for tests in 2024, retests included). That's 11 points above the average of 82% across all models in the same data.

How much does a 2020 BMW 6 Series cost to run?

Our estimate is £2,086 a year (£174 a month): £1,631 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2020 BMW 6 Series?

93% of 662 MOT tests on the 2020 BMW 6 Series ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 1022nd of 2,554 models first registered in 2020 (top half).

Which year BMW 6 Series has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 BMW 6 Series has the highest MOT pass rate at 93% and the 2005 the lowest at 80%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2020 BMW 6 Series?

The average mileage recorded at MOT tests on the 2020 BMW 6 Series is 38,758 miles, which is above the expected 29,600 miles for a 4-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.