2005 BMW 6 Series Convertible Review | Edmunds.com

2005 BMW 6 Series Convertible

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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 13/21 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.

What Others Are Saying

Customer Reviews

35 of 35 people found this review helpful

A piece of art but

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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.

I love this car!

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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

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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.

1 of 1 people found this review helpful

I love this car

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

Drives like a dream, tremendous pick-up, wonderful sight lines. The top is quick and easy to raise or lower. The iDrive is easier to use than most reviewers seem to experience.

1 of 1 people found this review helpful

Incredible machine

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

I had read all of the review and was a bit reluctant, until I drove this vehicle. For a vehicle of this size, it handles and corners amazingly well. Performance is outstanding! 0- 30 is strong; however, 30-100 is absolutely incredible and leaves most everyting in the dust. To top it off the ride is compliant, the seats are the most comfortable I have ever encountered, the logic 7 sound system is amazing - even at super legal speeds with the top down. The much maligned I Drive in now very intuitive - once you read the manual just once. This is the best car I have ever owned or driven! It you are looking for a great convertible - at any price - this is it!

Full 2005 BMW 6 Series Review

Talk About The 2005 6 Series

Gas Mileage


  • 13
  • cty
  • 21
  • highway
Calculate Yearly Fuel Costs
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