2005 BMW 6 Series Review | Edmunds.com

2005 BMW 6 Series

Certified Pre-Owned (CPO) is a category of used car. Often late-model vehicles, they have been inspected, refurbished, if necessary, and are under warranty by the manufacturer.
BMW 6 Series Features and Specs

Features & Specs

  • Engine 4.4 L V 8-cylinder
  • Drivetrain Rear Wheel Drive
  • Transmission 6-speed Manual
  • Horse Power 325 hp @ 6100 rpm
  • Fuel Economy 15/23 mpg
  • Bluetooth Yes
  • Navigation Yes
  • Heated Seats Yes

Review of the 2005 BMW 6 Series

  • The 6 Series may not have the sleek, sexy sheet metal of its Mercedes-Benz rivals, but its satisfying combination of performance, luxury and technology will put you on top of the world.

  • Safety
  • Pros

    Nimble handling for a big coupe, smooth and quiet ride, endless power from ultrasmooth V8, elegant interior design, supportive seats, large trunk in coupe.

  • Cons

    iDrive controller is improved but still a nuisance, small backseat, only one engine option.

  • What's New for 2005

    Info is not yet available.

Full 2005 BMW 6 Series Review

What Others Are Saying

Customer Reviews

4 of 4 people found this review helpful

The perfect car

by on
Vehicle: 2005 BMW 6 Series 645Ci 2dr Coupe (4.4L 8cyl 6M)

you can not ask for a more better car. The speed is their the look is their the reliability is there it is just and overall perfect car i put on some 21" chrome BMW rims and everyone looks when i drive by its the best car BMW makes

38 of 38 people found this review helpful

A piece of art but

by on
Vehicle: 2005 BMW 6 Series 645Ci 2dr Convertible (4.4L 8cyl 6M)

My wife and I feel in love with our 05' BMW 645i conv. when we first picked it up. We purchased it Jan. 2011 used with only 33,000 miles on it. It had some years on it but we figured it would get several years of only normal maintenance type services and not need to worry about major mechanical or electric problem because of it's low mileage and series. After all this is one of BMW's flagship cars. While the car gets looks of admiration at stop lights the feeling of this wears out quickly when you count how many dollars and time it has spent in a BMW repair shop. The BMW 645i is like buying a boat - the 2 happiest days of ownership are the day you buy it and the day you get rid of it.

4 of 7 people found this review helpful

Unreliable starts

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Vehicle: 2005 BMW 6 Series 645Ci 2dr Coupe (4.4L 8cyl 6M)

At first I loved this car. I'm a low mileage driver and BMW tells me the car is meant to be driven a lot. If you don't drive it a lot this car is a life of hell. The BMW dealer told me if I don't drive it at least one day a week for an hour the battery will die. He said there is too much draining the battery. It's not a week though. Seven starts drains the battery. I keep it on a trickle charge, but that apparently doesn't keep it from draining. After the battery drains a couple dozen times, its time for a new battery which today cost over $500. That's not acceptable but what is really unacceptable is having an $80,000 car that leaves me stranded and calling AAA once a week.

I love this car!

by on
Vehicle: 2005 BMW 6 Series 645Ci 2dr Convertible (4.4L 8cyl 6M)

The finest car I have ever owned. I have had other BMW's, Mercedes, Volvos, 400 HP muscle cars and nothing compares to this car. It is in a class of its own when it comes to BMWs.

1 of 1 people found this review helpful

There are better options

by on
Vehicle: 2005 BMW 6 Series 645Ci 2dr Convertible (4.4L 8cyl 6M)

I think you can have a much better car for the same money. My car has been giving me a lot of headache with the operation of the roof; it stops working without previous notice and not even the BMW guys know why is that. She still is covered by the warranty but my concern is when it's over I'll be the one paying every time this happens again. Other than that, she runs ok but the engine isn't that amazing considering it's a V8 (should have much more grunts and ponies). Anyway, I wouldn't buy it again. Next time, I'll try Mercedes, Porsche or Audi.

What a beast machine

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Vehicle: 2005 BMW 6 Series 645Ci 2dr Convertible (4.4L 8cyl 6M)

Drove 3-series all my life until I got this beast. 6 speed is out of this world. Acceleration, handling and cornering couldn't be finer. I swapped out the run flats immediately even though there was only 19,000 on car. What a difference without that extra weight. Less expensive too. First gear buries the tach a little too fast but you get use to the quick shift to second. I took it to the limit 160+ once and it was still quiet in the rag top. The iDrive is simple once you read the manual. Quality and variations of the LOGIC7 is theater- like. I'm 6'7" and the cockpit is very accommodating. I just love my BEAST for power and style.

Talk About The 2005 6 Series

2005 BMW 6 Series Discussions See all Started By

units/ prev.yr.: 24,115 / +1.4%) and the BMW 6 Series Coupé (5,048 units/ prev.yr.: 4,741 / +6.5%). In June BMW delivered 121,576 automobiles to its customers and, thus slightly failed to reach the s...

I went up to NH yesterday to test drive some cars in this order:...

I went up to NH yesterday to test drive some cars in this order:...

Gas Mileage


  • 15
  • cty
  • 23
  • highway
Calculate Yearly Fuel Costs
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