How much does a 1990 BMW 6 SERIES cost to run?

Estimated annual running cost is £2,757 (£230/month), including £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 1990 BMW 6 SERIES?

The 1990 BMW 6 SERIES has a 85% MOT pass rate based on 39 tests in 2026. This ranks 55 out of 190 cars from 1990.

Which year BMW 6 SERIES is most reliable?

The 2020 BMW 6 SERIES has the highest MOT pass rate at 93%. The least reliable year is 2005 at 80%.

BMW 6 SERIES (1990)

Q: Is the 1990 BMW 6 SERIES reliable?

Good reliability. Occasional issues but generally solid. 85% of BMW 6 SERIESs from 1990 passed their MOT first time in 2026, based on 39 tests. That's 3 points above the national average of 82%.

Q: What is the average mileage for a 1990 BMW 6 SERIES?

The average mileage for a 1990 BMW 6 SERIES is 122,050 miles, which is significantly below the expected 266,400 miles for a 36-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

Running costs, reliability data, and common problems from 39 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

85%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

3453cc Petrol

Solid Option

85% pass rate, £2757/year to run. Close to the national average.

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Petrol3453cc36 years old39 tests122k miles avg

Annual Running Costs

Fuel (Petrol, 3453cc)

~30 mpg

£1,592

Road Tax

Based on 3453cc

£760

MOT Test

£55

Predicted Repairs

£350

Total per year£2,757

Per month£230/mo

Per week£53/wk

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

85% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.

At 36 years old, 85% of BMW 6 SERIESs from 1990 passed their MOT first time in 2026. That's based on 39 tests across the UK. The average mileage at this age is 122,050 miles.

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How Does It Compare?

Rank among 1990 cars55th of 190(top 29%)

Rank among BMW models1155th of 1,564(top 74%)

vs national average+3%(82% avg)

vs 1990 cars average+6%(79% avg)

vs BMW average-3%(88% avg)

Mileage Analysis

122,050

Average miles

266,400

Expected for age

The average 1990 BMW 6 SERIES has 122,050 miles on the clock, which is significantly below the expected 266,400 miles for a 36-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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Best Year to Buy?

The most reliable year is the 2020 model with a 93% MOT pass rate, while the 2005 model has the lowest at 80%. The 1990 sits between the two at 85%.

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

PORSCHE 911

1990 · 3600cc Petrol

£2,097/year

91%

+6%

MERCEDES 300

1992 · 2996cc Petrol

£2,247/year

83%

-2%

PORSCHE 944

1990 · 2969cc Petrol

£2,247/year

85%

same

LAND ROVER RANGE ROVER

1992 · 3950cc Petrol

£2,247/year

85%

same

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About the 1990 BMW 6 SERIES

The 1990 BMW 6 SERIES is a premium performance with a 3453cc petrol engine. 39 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 1990, the average MOT pass rate is 79%, and this model beats that benchmark.

With an average of 122,050 miles at 36 years old, BMW 6 SERIES 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.

1990 BMW 6 SERIES Fuel Costs

The 3453cc 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 £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 1990 BMW 6 SERIES?

Total estimated annual running cost is £2,757 (£230/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 85% pass rate. Keeping on top of servicing will help avoid surprises.

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 1990 BMW 6 SERIES

At 36 years old, the BMW 6 SERIES 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. If you're flexible on year, the 2020 model has the highest pass rate at 93%. Note: with only 39 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 1990 BMW 6 SERIES's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 36 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.

Rust and Corrosion

Watch out

At 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 out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Watch out

With an average of 122k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Engine Mounts

Medium risk

Worn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.

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 1990 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(1990)	85%	£1592	£760	Grp 35-50	£2757
PORSCHE 911(1990)	91%	£1592	£250	Grp 35-50	£2097-£660
MERCEDES 300(1992)	83%	£1592	£250	Grp 30-42	£2247-£510
PORSCHE 944(1990)	85%	£1592	£250	Grp 30-42	£2247-£510
LAND ROVER RANGE ROVER(1992)	85%	£1592	£250	Grp 35-50	£2247-£510

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.