BMW M6 (2018)

Estimated running costs and MOT pass rates from 161 MOT tests in 2024.

Annual Cost

£2,563

£214/month

MOT Pass Rate

89%

Good

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 35-50

4395cc Petrol

Solid Option

89% pass rate, £2,563/year to run. 7 points above average.

Buying this car? Check for finance, write-offs & theft

£4.99

Check a specific BMW M6

Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.

Petrol4395cc8 years old161 tests41k miles avg

Annual Running Costs

Fuel (Petrol, 4395cc)

~30 mpg

£1,958

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

£350

Total per year£2,563

Per month£214/mo

Per week£49/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

89% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the average of 82% across all models in our data.

89% of MOT tests on BMW M6s from 2018 ended in a pass in 2024, when they were about 6 years old. That's based on 161 tests across the UK, retests included. The average mileage recorded at those tests was 41,044 miles.

Got a BMW M6 you're looking at?

Enter the reg plate to check its specific MOT history, mileage, and health score.

How Does It Compare?

Rank among 2018 models389th of 607(bottom half)

Rank among BMW models846th of 1,548(bottom half)

vs average of all models+7%(82% avg)

vs 2018 models average+0%(89% avg)

vs BMW average+1%(88% avg)

Mileage Analysis

41,044

Average miles

44,400

Expected for age

The average 2018 BMW M6 had 41,044 miles on the clock at its 2024 MOT, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.

Looking at a specific BMW M6?

Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.

Best Year to Buy?

Of the years with at least 100 tests, the 2014 model has the highest MOT pass rate at 95%, while the 2005 model has the lowest at 87%. The 2018 scores 89%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

BMW M6 by Year

Year	Pass Rate	Tests	Avg Mileage
2018	89%	161	41,044 mi
2017	94%	341	38,245 mi
2016	92%	555	48,815 mi
2015	92%	629	55,303 mi
2014	95%	800	54,790 mi
2013	91%	310	54,574 mi
2012	93%	106	54,436 mi
2009	92%	38	63,568 mi
2008	89%	57	67,934 mi
2007	93%	107	69,046 mi
2006	90%	230	77,159 mi
2005	87%	204	77,020 mi

Similar Cars to Consider

Mercedes C

2016 · 3982cc Petrol

£3,153/year

88%

-1%

Audi A6

2016 · 3993cc Petrol

£3,153/year

89%

same

Porsche Cayenne

2019 · 3996cc Petrol

£2,413/year

95%

+6%

Porsche 911

2018 · 3996cc Petrol

£2,413/year

96%

+7%

Check a Specific BMW M6

Enter a reg plate to get the full MOT history, health score, and mileage verification.

Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.

About the 2018 BMW M6

The 2018 BMW M6 is a premium performance car. Our records list a 4395cc petrol engine, though engines vary between versions. 161 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. Among all models from 2018, the average MOT pass rate is 89%, and this model matches that benchmark.

With an average of 41,044 miles recorded at its 2024 MOT tests, BMW M6 owners drive about as much as the UK average.

2018 BMW M6 Fuel Costs

The 4395cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 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 2018 BMW M6?

Total estimated annual running cost is £2,563 (£214/month), broken down as £1,958 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.

BMW M6 Reliability Trend

The BMW M6 has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.

Buying a Used 2018 BMW M6

At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2014 model has the highest pass rate at 95%.

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 8 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.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

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 2018 BMW M6 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 M6(2018)	89%	£1,958	£200	Grp 35-50	£2,563
Mercedes C(2016)	88%	£1,958	£790	Grp 35-50	£3,153+£590
Audi A6(2016)	89%	£1,958	£790	Grp 35-50	£3,153+£590
Porsche Cayenne(2019)	95%	£1,958	£200	Grp 35-50	£2,413-£150
Porsche 911(2018)	96%	£1,958	£200	Grp 35-50	£2,413-£150

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 2018 BMW M6

Is the 2018 BMW M6 reliable?

Good reliability. Occasional issues but generally solid. 89% of MOT tests on 2018 BMW M6s ended in a pass, from 161 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points above the average of 82% across all models in the same data.

How much does a 2018 BMW M6 cost to run?

Our estimate is £2,563 a year (£214 a month): £1,958 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2018 BMW M6?

89% of 161 MOT tests on the 2018 BMW M6 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 389th of 607 models first registered in 2018 (bottom half).

Which year BMW M6 has the best MOT pass rate?

Of the years with at least 100 tests, the 2014 BMW M6 has the highest MOT pass rate at 95% and the 2005 the lowest at 87%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2018 BMW M6?

The average mileage recorded at MOT tests on the 2018 BMW M6 is 41,044 miles, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.