Review: BMW 6 Series (2004 – 2011)


An entertaining car along an open road. The M6 is a phenomenal drive.

Not at home in urban environments. Tyre wear. Rear backrests are very upright.

Recently Added To This Review

6 August 2019

Report of convertible roof mechanism of 2008 E64 BMW 630i convertible sticking part-way through opening. The windows have dropped and the dashboard shows roof unlocked. The roof will neither open or... Read more

10 August 2016

Report of a big bill of £3,911.83 for repairs to the cooling system of a 70,000 mile 2005 BMW 645i, bought new and BMW maintained by the same owner all its life. The invoice states:- Checking cooling... Read more

16 November 2015

If satnav fails and BWW dealer wants £1,600 to replace it, the failure may only be the laser disc reader and a specialist can fix this for £250. Read more

BMW 6 Series (2004 – 2011): At A Glance


What does a BMW 6 Series (2004 – 2011) cost?

List Price from £43,910
Buy new from £34,278
Contract hire from £412.79 per month
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Real MPG average for a BMW 6 Series (2004 – 2011)

Real MPG was created following thousands of readers telling us that their cars could not match the official figures.

Real MPG gives real world data from drivers like you to show how much fuel a vehicle really uses.

Average performance


Real MPG

17–42 mpg

MPGs submitted


Diesel or petrol? If you're unsure whether to go for a petrol or diesel (or even an electric model if it's available), then you need our Petrol or Diesel? calculator. It does the maths on petrols, diesels and electric cars to show which is best suited to you.

What have we been asked about the BMW 6 Series (2004 – 2011)?

Every day we're asked hundreds of questions from car buyers and owners through Ask Honest John. Our team of experts, including the nation's favourite motoring agony uncle - Honest John himself - answer queries and conudrums ranging from what car to buy to how to care for it as an owner. If you could do with a spot of friendly advice before buying you're next car, get in touch and we'll do what we can to help.

Ask HJ

Is a £4000 repair bill acceptable for a 11 year old car?

I purchased a BMW 645i from a BMW main dealer in May 2005. It has been maintained by them ever since at the required intervals. Recently I have just had the car into the garage and have ended up with a bill of £4k. The invoice states:- Checking cooling system for leaks, Bleeding and checking cooling system for leaks, removing and installing/sealing upper coolant end cover, removing and installing/sealing left cylinder head cover, and remove and install or seal or replace timing case cover. Overall parts were £1000 - Labour was £2000. Do you think that the above is acceptable in a car that has only covered 70,000 miles, albeit it is now 11 years old?
It's possible that you could have had the work done more cheaply by an independent BMW service and repair specialist. But it's an 11 year old car and from now on bills like this are going to continue coming in. Seems that ordinary cars last around 7 years before big bills, some of which could be more than the car is worth. Higher 'quality' brands seem to get to around 11 years before big bills. All too often things like exhaust systems incorporating lambdas sensors and cat converters, or all-singing, all-dancing multi-function touch screens. On Mercedes, it's SBS braking systems and automatic transmission heat exchangers, plus multiple SAM units. Nothing is immune. Electrical failures are rife in German cars as multiple contacts dry out. We get lulled by the honeymoon period when modern cars are far more reliable than cars ever were previously. But when things go wrong they go very wrong.
Answered by Honest John
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