2005 BMW 645 Ci Auto Convertible


  • Beautiful Stratos grey paintwork 
  • Anti roll over protection with roll bar deployment
  • Many lightweight aluminium parts to aid performance
  • Excellent original condition
  • Precise drive with accurate steering
  • Sleek and captivating design
  • Powerful and exhilarating performance from the 4.4-litre V8 engine
  • Wonderful low growl engine tone 
  • Luxurious and comfortable burgundy interior with high-quality materials


On release, the 6-Series 645 was seen to be the best BMWs in years, combining a lot of the key safety, performance and quality issues seen in the later cars. 

The exterior was designed by Adrian van Hooydonk and BMW Design Chief Chris Bangle. It features the angular lines at the rear that was a real talking point at the time of manufacture and grew in popularity. On release, the overall  design was said to look bold and unconventional while retaining the elegance of all good grand tourers. It has seemed to age very well and still looks fresh today.

This soft soft-top example we have here has even more appeal, especially when the top is down, and you can hear the glorious growl from the V8 engine. 

The decision was made by BMW engineers to advance the art of the folding soft-top. Such systems give greater flexibility, more boot space and contribute to lightweight engineering. 

The roof is multi-layered and made of a rubberised cloth inner and outer with a polyurethane material called PUR sandwiched between. This results in virtually the same high standards of acoustics, feel and thermal insulation as a folding hard-top, reducing wind noise by up to 3dB(A).

Not many four-seater convertibles are pure drivers' cars, but the 645Ci is one of an elite breed and wafts you around in luxury like the 7 Series. The appeal lies just as much in its dynamics as in its performance. 

The car also features the German company's acclaimed Dynamic Drive active suspension set-up  and safety is also a huge attraction for this car which features BMW's Advanced Safety System, enabling the car to decide the most effective deployment of the airbags in a crash, dynamic stability control, front knee protection the convertible model we have here also feature an automatic rollover protection system, where roll-bars behind the rear seats are automatically deployed in a rollover. This car is a versatile all-rounder and a real eye catcher.


  • The vendor bought from Silverstone cars in Barking, London
  • The V5 is present
  • The car is in Northern Ireland so conforms to all UK regulations as it is UK registered
  • Full service history with 9 service stamps in the book
  • Last service was 74,824 miles ago and was really comprehensive with all fluids changed
  • The portfolio of booklets is in place including the owners handbook
  • 75,265 miles
  • Dry stored


  • Beautiful contrasting grey and burgundy interior made with high quality materials
  • No real wear on the knobs and switches
  • The vendor tells us that all the electrics work as they should
  • No warning lights were apparent on the dashboard
  • Original carpets and floor mats
  • Unmarked wood effect panels in new condition
  • The footplates are virtually unmarked
  • The adjustable electric seats ensure a comfortable driving position
  • Netting on the rear seats unused and tight
  • Centre console armrest is like new
  • Trip computer is working well and has the facility to take hands free phones
  • Door cards unmarked
  • The boot is clean and dry with the full toolkit
  • Seat belts retract well
  • The boot is clean and tidy with the tool kit in place
  • Sumptuous leather seats are really fresh and clean
  • The rear seating looks unused and appears quite spacious for a grand tourer
  • Inside the tonneau cover is clean and unmarked
  • When the top is stowed, the window can be raised to act as an effective wind blocker. This works well
  • Polyurethane material (PUR) sandwiched between layers for enhanced acoustics and thermal insulation offers the same high standards of insulation as a folding hard-top


  • The stratos grey paintwork is in fine condition with very few blemishes
  • The light covers are clean and bright
  • Slight aluminium pitting on the inside of the wing mirrors
  • The aluminium and plastic body panels line up beautifully
  • Front heated headlights
  • Parking sensors
  • The advanced folding soft top is in excellent condition
  • Door catches and locks work well
  • The innovative soft top fins double back, allowing the car to feature a comparatively small, independent, electrically-powered vertical rear window
  • Operating the roof to fully up or down takes just twenty seconds and, within this time, all windows are lowered or raised as required
  • Tiny indent on the drivers door wouldn’t show up in the images
  • Slight lacquer peel on the edge of the rear drivers side bumper
  • To reduce weight, the doors and bonnet are made of aluminium and the boot and front wings are made of carbon-reinforced plastic
  • The vendor tells us the car is firm with no skuttle shake and feels as rigid as a hard top coupé


  • The 4398cc V8 petrol engine sounds wonderful, and the vendor tells us it runs without fault
  • The power comes from the same engine as the Coupe. With 333bhp available, it propels the car from 0-60mph in 5.6 seconds
  • Top speed is limited to 155mph. But the V8 isn't all about performance. At cruising speeds the vendor tells us the car wafts along almost silently
  • The Valvetronic V8 is also found in the 7 Series but sounds much meatier thanks to the less restrictive exhaust
  • No cooling pipe leaks that we can see
  • The vendor states the timing cover gasket is dry
  • Healthy ignition coil
  • Parking sensors
  • Adaptive heated headlights
  • Variable rate steering (Active steering)
  • Active cruise control
  • The vendor has had the car serviced and there were no reports of oil leaks
  • No electrical issues or warning lights on the dashboard we could see
  • Active Roll Stabilization system tightens-up the car around corners
  • 6 speed auto gearbox


This BMW 645Ci 6-Series convertible is a uniquely designed 2dr coupé/grand tourer, with lots of luxurious features and advanced technology of the time. It has a spacious interior, and a powerful engine. It truly is a versatile all round vehicle.

With an exquisite electric folding roof that drops under the boot lid in less than 10 seconds, the soft-top is the perfect tool for drivers who like to be noticed. It's a guaranteed head-turner.

The vendor assures us there are none of the small issues present such as oil leaks, engine misfiring, fuel pump issues, ignition coil failure and everything is working as it should.

The luxurious interior, adorned with high-quality materials, offers comfort and style in every detail. With advanced technology features and a smooth automatic transmission, this BMW 645 Ci Auto Convertible delivers a seamless and enjoyable ride according to the vendor and he is sad to see it go. 

Overall, this convertible represents the perfect blend of luxury, elegance, performance, and driving pleasure, making it the perfect choice for the next person seeking an extraordinary driving experience.

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This item is sold on an ‘As is Where is’ basis. The condition of this item is the opinion of the seller and may differ from your own opinion. Photos and listing descriptions are for guidance purposes only*.** Car & Classic do not warrant listing accuracy. Full inspection is recommended. Viewings are at the seller’s discretion. Buyer is responsible for delivery and collection of any item purchased.*

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Vehicle specification
  • Year 2005
  • Make BMW
  • Model 645 Ci Auto
  • Colour Stratos Grey
  • Odometer 75,625 Miles
  • Engine size 4398
Auction Details
  • Seller Type Private
  • Town Eglinton
  • Location Northern Ireland
  • Country United Kingdom
Bidding history
11 bids from 9 bidders
  • le•••• £5,450 08/06/23
  • BW•••• £4,600 08/06/23
  • th•••• £4,500 07/06/23
  • jd•••• £4,250 06/06/23
  • Mi•••• £4,000 05/06/23
  • Pr•••• £3,500 05/06/23
  • bo•••• £3,300 04/06/23
  • ne•••• £3,200 02/06/23
  • Mi•••• £3,000 02/06/23
  • ne•••• £2,600 01/06/23

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