| petrol | |
| diesel | |
| alcohol based | |
| gas (LPG, CNG) | |
| steam | |
| electricity |
(1979 model)
4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 2788 cm3 / 170.1 cu in / 170.1 cu in, 135.0 kW / 181.0 hp / 181.0 hp @ 5800 rpm / 5800 rpm / 5800 rpm, 240.0 N·m / 177.0 lb·ft / 177.0 lb·ft @ 4200 rpm / 4200 rpm / 4200 rpm, manual 5-speed transmission, rear wheel drive, 201 km/h / 125 mph / 125 mph top speed
| Marque (make) | BMW | Issued from | 1979 |
|---|---|---|---|
| Model | 728i | Issued until | |
| Serie | 7 | Number made | |
| Model family | E23 | Body construction | |
| Model code | Body designation | ||
| Manufacturer | BMW | Country | DE,ZA |
| Base platform | Number of doors | 4 | |
|---|---|---|---|
| Bodywork type | sedan (saloon) | Number of seats | 5 |
| Bodywork designer | Cargo capacity (volume) | 500 l / 17.66 cu ft / 17.66 cu ft | |
| Passenger space (volume) | 4450 l / 157.15 cu ft / 157.15 cu ft | Max. cargo capacity (volume) |
| Length | 4860 mm / 191.3 in / 191.3 in | Total (curb) weight | 1470 kg / 3241 lb / 3241 lb |
|---|---|---|---|
| Width | 1800 mm / 70.9 in / 70.9 in | Dry weight | |
| Height | 1430 mm / 56.3 in / 56.3 in | Load capacity | |
| Wheelbase | 2790 mm / 109.8 in / 109.8 in | Gross (max.) weight | |
| Track front | 1500 mm / 59.1 in / 59.1 in | Towing weight | |
| Track rear | 1520 mm / 59.8 in / 59.8 in | Weight distribution (front) | |
| Ground clearance | Fuel capacity | 100 l / 22.0 UK gal / 26.4 US gal | |
| Length/wheelbase ratio | 1.74 |
| Drag coefficient (Cd, Cx, Cw) | 0.42 | Frontal area (A) | 2.19 m2 / 23.6 sq ft / 23.6 sq ft (est.) |
|---|---|---|---|
| Aerodynamic coefficient (Cd×A) | 0.92 m2 / 9.9 sq ft / 9.9 sq ft (est.) | Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph) | 22.8 kW / 30.6 hp / 30.6 hp (est.) |
| Engine Code | M30 | Total number of cylinders | 6 |
|---|---|---|---|
| Engine Type | straight (inline) (Inline, 6 cylinder) | Total number of valves | 12 |
| Engine Manufacturer | BMW | Valves per cylinder | 2 |
| Engine construction | cast iron block; light alloy head | Bore | 86.0 mm / 3.39 in / 3.39 in |
| Fuel | petrol (gasoline) | Stroke | 80.0 mm / 3.15 in / 3.15 in |
| Fuel details | Bore/Stroke ratio | 1.08 | |
| Fuel supply | Bo L-Jet fuel inj. | Engine displacement | 2788 cm3 / 170.1 cu in / 170.1 cu in |
| Engine Main bearings | 7 | Unitary capacity | 464.67 cm3/cylinder / 28.356 cu in/cylinder / 28.356 cu in/cylinder |
| Cam Design | SOHC (single overhead camshaft) | Compression ratio | 9.3 : 1 |
| Sump | Max. output power | 135.0 kW / 181.0 hp / 181.0 hp at 5800 rpm / 5800 rpm / 5800 rpm | |
| Aspiration | natural | Max. torque | 240.0 N·m / 177.0 lb·ft / 177.0 lb·ft at 4200 rpm / 4200 rpm / 4200 rpm |
| Compressor type | N/A | Maximum rpm | 6500 rpm / 6500 rpm / 6500 rpm |
| Intercooler | no | Max. net output (power at the wheels) | 65.1 kW / 87.3 hp / 87.3 hp (est.) |
| Coolant | water | Specific output | 48.4 kW/l / 1.064 bhp/cu in / 1.064 bhp/cu in |
| Catalytic converter | no | Specific torque | 86.1 N·m/l / 0.75 lb·ft/cu in / 0.75 lb·ft/cu in |
| Transmission type | manual | Number of gears | 5 |
|---|---|---|---|
| Wheel drive | rear wheel drive | Top gear (drive) ratio | 0.81 |
| Final gear (drive) ratio | 3.64 |
| Acceleration 0-50 mph (80 km/h) | Top (maximal) speed | 201 km/h / 125 mph / 125 mph | |
|---|---|---|---|
| Acceleration 0-60 mph (97 km/h) | 9.30 s / 9.30 s / 9.30 s | Power-to-weight ratio | 123.1 kW/ton / 93.3 bhp/ton / 93.3 bhp/ton |
| Acceleration 0-100 km/h | Fuel consumption, City (urban) | ||
| Acceleration 0-100 mph (160 km/h) | Fuel consumption, Road (extra-urban) | ||
| Acceleration 80-120 km/h (50-70 mph) in top | Fuel consumption, Mixed (combined) | ||
| Standing ¼mile time | Fuel consumption, Euro | ||
| Standing kilometer time | CO2 emissions | ||
| Range |
| Engine location | front | Engine alignment | longitudinal |
|---|---|---|---|
| Steering | recirculating ball VPAS | Steering details | |
| Turns lock-to-lock | 3.8 | Turning circle | 11.4 m / 37.4 ft / 37.4 ft |
| Suspension front | Independent, Coil springs, Anti-roll (anti-sway) bar (ARB) | Suspension rear | Independent, Semi-trailing arm, Coil springs |
| Wheels front | 6 | Wheels rear | 6 |
| Tyres front | 195/70 HR 14 | Tyres rear | 195/70 HR 14 |
| Brakes front | ventilated disc | Brakes rear | disc |
| Brake diameter front | 280 mm / 11.0 in / 11.0 in | Brake diameter rear | 280 mm / 11.0 in / 11.0 in |
| Brakes details | servo-assisted, ABS (anti-lock braking system) | Braked area |
Technical specifications and performance data of BMW 728i
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