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BMW 645Ci Cabrio

(2003 model)

Brief specs of 2003 BMW 645Ci Cabrio

2-door 2+2-seater drophead coupé (convertible coupé), petrol (gasoline) 8-cylinder 32-valve V engine, DOHC (double overhead camshafts, twin cam), 4398 cm3 / 268.4 cu in / 268.4 cu in, 244.6 kW / 328.0 hp / 328.0 hp @ 6100 rpm / 6100 rpm / 6100 rpm, 450.0 N·m / 331.9 lb·ft / 331.9 lb·ft @ 3600 rpm / 3600 rpm / 3600 rpm, manual 6-speed transmission, rear wheel drive, 250 km/h / 155 mph / 155 mph top speed, consumption 12.8 l/100km / 22.1 mpg-UK / 18.4 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2003
Model645Ci CabrioIssued until
Serie6Number made
Model familyE63Body construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2+2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4820 mm / 189.8 in / 189.8 inTotal (curb) weight1890 kg / 4167 lb / 4167 lb
Width1855 mm / 73.0 in / 73.0 inDry weight
Height1373 mm / 54.1 in / 54.1 inLoad capacity
Wheelbase2780 mm / 109.4 in / 109.4 inGross (max.) weight
Track front1558 mm / 61.3 in / 61.3 inTowing weight
Track rear1592 mm / 62.7 in / 62.7 inWeight distribution (front)
Ground clearanceFuel capacity70 l / 15.4 UK gal / 18.5 US gal
Length/wheelbase ratio1.73  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.31Frontal area (A)2.15 m2 / 23.1 sq ft / 23.1 sq ft
Aerodynamic coefficient (Cd×A)0.67 m2 / 7.2 sq ft / 7.2 sq ftAerodynamic resistance (Aero horse power) at 100 km/h (62 mph)16.7 kW / 22.3 hp / 22.3 hp

Engine

Engine CodeTotal number of cylinders8
Engine TypeV engine Total number of valves32
Engine ManufacturerBMWValves per cylinder4
Engine constructionBore92.0 mm / 3.62 in / 3.62 in
Fuelpetrol (gasoline)Stroke82.7 mm / 3.26 in / 3.26 in
Fuel detailsBore/Stroke ratio1.11
Fuel supplyEFiEngine displacement4398 cm3 / 268.4 cu in / 268.4 cu in
Engine Main bearings5Unitary capacity549.75 cm3/cylinder / 33.548 cu in/cylinder / 33.548 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio10.5 : 1
SumpMax. output power244.6 kW / 328.0 hp / 328.0 hp at 6100 rpm / 6100 rpm / 6100 rpm
AspirationnaturalMax. torque450.0 N·m / 331.9 lb·ft / 331.9 lb·ft at 3600 rpm / 3600 rpm / 3600 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)128.8 kW / 172.7 hp / 172.7 hp (est.)
CoolantwaterSpecific output55.6 kW/l / 1.222 bhp/cu in / 1.222 bhp/cu in
Catalytic converteryesSpecific torque102.3 N·m/l / 0.90 lb·ft/cu in / 0.90 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears6
Wheel driverear wheel driveTop gear (drive) ratio0.87
  Final gear (drive) ratio3.46

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed250 km/h / 155 mph / 155 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio173.5 kW/ton / 131.5 bhp/ton / 131.5 bhp/ton
Acceleration 0-100 km/h6.10 s / 6.10 s / 6.10 sFuel consumption, City (urban)18.5 l/100km / 15.3 mpg-UK / 12.7 mpg-US
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)9.6 l/100km / 29.4 mpg-UK / 24.5 mpg-US
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)12.8 l/100km / 22.1 mpg-UK / 18.4 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions310 g/km / 499 g/mi / 499 g/mi
  Range547 km / 340 mi / 340 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontSuspension rear
Wheels front8J x 18Wheels rear8J x 18
Tyres front245/45 R 18 96W RSCTyres rear245/45 R 18 96W RSC
Brakes frontventilated discBrakes rearventilated disc
Brake diameter front348 mm / 13.7 in / 13.7 inBrake diameter rear345 mm / 13.6 in / 13.6 in
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW 645Ci Cabrio

Infobox

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How does my driving record affect my insurance premium?

The premium you pay is a direct reflection of your driving record for the past three to five years depending on the insurance company. Insurance companies order driving records from the DMV of your residence state and from other states where you've been licensed. Statistics show that drivers with tickets and accidents are more likely to have accidents than drivers with clean records.

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