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BMW Z4 Roadster 2.5i Automatic

(2004 model)

Brief specs of 2004 BMW Z4 Roadster 2.5i Automatic

2-door 2-seater convertible (cabriolet), petrol (gasoline) 6-cylinder 24-valve straight (inline) engine, DOHC (double overhead camshafts, twin cam), 2494 cm3 / 152.2 cu in / 152.2 cu in, 138.0 kW / 185.1 hp / 185.1 hp @ 6000 rpm / 6000 rpm / 6000 rpm, 245.0 N·m / 180.7 lb·ft / 180.7 lb·ft @ 3500 rpm / 3500 rpm / 3500 rpm, automatic 6-speed transmission, rear wheel drive, 235 km/h / 146 mph / 146 mph top speed, consumption 10.2 l/100km / 27.7 mpg-UK / 23.1 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2004
ModelZ4 Roadster 2.5i AutomaticIssued until
SerieZ4Number made
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE

Bodywork

Base platformNumber of doors2
Bodywork typeconvertible (cabriolet)Number of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)4130 l / 145.85 cu ft / 145.85 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4100 mm / 161.4 in / 161.4 inTotal (curb) weight1296 kg / 2857 lb / 2857 lb
Width1790 mm / 70.5 in / 70.5 inDry weight
Height1300 mm / 51.2 in / 51.2 inLoad capacity270 kg / 595 lb / 595 lb
Wheelbase2500 mm / 98.4 in / 98.4 inGross (max.) weight1566 kg / 3452 lb / 3452 lb
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity55 l / 12.1 UK gal / 14.5 US gal
Length/wheelbase ratio1.64  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.98 m2 / 21.3 sq ft / 21.3 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves24
Engine ManufacturerValves per cylinder4
Engine constructionBore84.0 mm / 3.31 in / 3.31 in
Fuelpetrol (gasoline)Stroke75.0 mm / 2.95 in / 2.95 in
Fuel detailsunleaded 98Bore/Stroke ratio1.12
Fuel supplyInjectionEngine displacement2494 cm3 / 152.2 cu in / 152.2 cu in
Engine Main bearingsUnitary capacity415.63 cm3/cylinder / 25.363 cu in/cylinder / 25.363 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio11.0 : 1
SumpMax. output power138.0 kW / 185.1 hp / 185.1 hp at 6000 rpm / 6000 rpm / 6000 rpm
AspirationMax. torque245.0 N·m / 180.7 lb·ft / 180.7 lb·ft at 3500 rpm / 3500 rpm / 3500 rpm
Compressor typeMaximum rpm
IntercoolerMax. net output (power at the wheels)55.2 kW / 74.0 hp / 74.0 hp (est.)
CoolantSpecific output55.3 kW/l / 1.216 bhp/cu in / 1.216 bhp/cu in
Catalytic converterSpecific torque98.2 N·m/l / 0.86 lb·ft/cu in / 0.86 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears6
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed235 km/h / 146 mph / 146 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio145.4 kW/ton / 110.2 bhp/ton / 110.2 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)11.8 l/100km / 23.9 mpg-UK / 19.9 mpg-US
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)8.4 l/100km / 33.6 mpg-UK / 28.0 mpg-US
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)10.2 l/100km / 27.7 mpg-UK / 23.1 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions239 g/km / 384 g/mi / 384 g/mi (est.)
  Range539 km / 335 mi / 335 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle11.0 m / 36.1 ft / 36.1 ft
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres front205/55-R16Tyres rear205/55-R16
Brakes frontventilated discBrakes reardisc
Brake diameter frontBrake diameter rear
Brakes detailsABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW Z4 Roadster 2.5i Automatic

 
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