BMW 6 Series 2003–2007 car dimensions: 4820 mm long, 1855 mm wide and 1373 mm high. Unladen weight is 1,890 kg. Boot space with the seats up is 350 litres.
The cabin has Dakota leather upholstery and electrically adjustable front seats with driver memory as standard. Automatic climate control with extended features is standard. Cruise control is standard. A 6.5-inch colour Control Display with iDrive controller handles comfort functions. Park Distance Control is optional. Active Cruise Control is optional. No automatic emergency braking, blind spot warning, lane keep or reversing camera.
Boot holds 350 litres with the roof closed and 300 litres with the roof open. Fits one large and one small suitcase or two golf bags plus a medium suitcase. Optional ski-bag and through-loading take skis or a snowboard.
Official figures show no trailer load rating. Payload is 350 kg. The car suits passenger and light luggage use only.
The cabin uses soft Dakota leather as standard with optional Exclusive Pearl nappa. Front seats offer multi-way power adjustment including length, height, squab and backrest angle plus driver memory and Comfort Entry for rear access. Sports seats add firmer support and thigh adjustment as an option. Automatic dual-zone climate control is standard with a pollen filter. The multi-layer soft top includes a heated glass rear window that lowers independently for ventilation or acts as a wind deflector. iDrive controls climate and other functions from a central display. High-quality trim options include wood or Ruthenium finishes for a refined 2+2 feel with good front space.
Combined fuel use 12.8-12.9 l/100 km on premium unleaded, 70-litre tank, Euro 4.
Condition Based Service monitors oil, filters, brakes and fluid with variable intervals by driving style.
No Euro NCAP rating published for this generation.
Standard kit includes six airbags, DSC with DTC/ABS/ASC/CBC/DBC/EBD, deployable rollover bars, run-flat tyres with puncture warning, ISOFIX and bi-xenon lights.
The 4.4-litre V8 runs on premium unleaded and returns combined consumption of 12.8 l/100 km with the manual or around 11.5 l/100 km with automatic according to official figures. Tank capacity is 70 litres. Emissions meet Euro 4.
Servicing follows Condition Based Service. Sensors track oil quality, brake wear, filters and fluid condition so intervals adapt to how the car is driven rather than fixed mileages. The system flags remaining distance or time on the display.
Safety equipment centres on six airbags with intelligent front deployment, full DSC suite including traction and brake controls, and a dedicated rollover protection system that deploys high-strength bars behind the rear seats. Run-flat tyres with pressure warning and ISOFIX anchors are standard. No official crash-test star rating appears for the model.
Day-to-day ownership benefits from the adaptive service system and run-flat capability that removes the need for a spare. The soft top folds fully automatically in around 20 seconds and the glass rear window doubles as a windbreak. Lightweight construction with aluminium and composites aids dynamics while the near 50:50 weight balance supports balanced handling.
Length 4820 mm, Width 1855 mm, Height 1373 mm, Wheelbase 2780 mm (6 Series 2003–2007)
Sources: manufacturer data, BMW Technische Daten sheet, BMW Group press kit “The New BMW 6 Series Convertible” confirms, Powertrain figures are the 645Ci launch specification within the pre-facelift E64 cabriolet.