CarCostCheck

BMW 645 (2011)

Running costs, reliability data, and common problems from 52 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

4398cc Petrol

Solid Option

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

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Petrol4398cc15 years old52 tests76k miles avg

Annual Running Costs

Fuel (Petrol, 4398cc)

~30 mpg

£1,592
Road Tax

Based on 4398cc

£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 15 years old, 85% of BMW 645s from 2011 passed their MOT first time in 2026. That's based on 52 tests across the UK. The average mileage at this age is 76,143 miles.

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How Does It Compare?

Rank among 2011 cars208th of 615(top 34%)
Rank among BMW models1154th of 1,564(top 74%)
vs national average+3%(82% avg)
vs 2011 cars average+8%(77% avg)
vs BMW average-3%(88% avg)

Mileage Analysis

76,143

Average miles

vs

111,000

Expected for age

The average 2011 BMW 645 has 76,143 miles on the clock, which is below the expected 111,000 miles for a 15-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 2005 model with a 86% MOT pass rate, while the 2004 model has the lowest at 83%. The 2011 sits between the two at 85%.

BMW 645 by Year

YearPass RateTestsAvg Mileage
201185%5276,143 mi
200586%1,061103,715 mi
200483%2,538105,730 mi

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About the 2011 BMW 645

The 2011 BMW 645 is a premium performance with a 4398cc petrol engine. 52 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 2011, the average MOT pass rate is 77%, and this model beats that benchmark.

With an average of 76,143 miles at 15 years old, BMW 645 owners tend to use this car less than the typical driver.

2011 BMW 645 Fuel Costs

The 4398cc 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 2011 BMW 645?

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 645 Reliability Trend

The BMW 645 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Buying a Used 2011 BMW 645

At 15 years old, the BMW 645 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 2005 model has the highest pass rate at 86%. Note: with only 52 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 2011 BMW 645's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 15 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.

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 2011 BMW 645 stacks up against similar cars for annual running costs, insurance, and tax.

CarPass RateFuel/yrTax/yrInsuranceTotal/yr
BMW 645(2011)85%£1592£760Grp 35-50£2757
BMW X5(2010)86%£1592£250Grp 35-50£2247-£510
VOLVO XC90(2009)78%£1592£250Grp 35-50£2397-£360
MERCEDES SL(2013)89%£1592£250Grp 35-50£2247-£510
BENTLEY CONTINENTAL(2013)96%£1592£250Grp 35-50£2097-£660

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

Explore other Bmw cars or similar models in the same category.

Related Guides

In-depth articles relevant to the Bmw 645.

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