BMW 520i (E12)

BMW 5 series 1974 2.0 petrol description

Sedan BMW 520i has been produced from January, 1976 to December, 1979. It has petrol engine with displacement of 2.0 litres, which produces power of 125 horsepower on 5800 rpm and torque 170 Nm (Newton metres) on 4000 revolutions per minute.

This 4-cylinder 8-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine may have fuel injection system or carburetor without turbocharger. Average engine life expectancy (mileage before serious repairs are needed) is from 280 000 to 480 000 kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs 
This BMW 5 series 2.0 engine oil type is 5W-40 and oil capacity is 4.2 litres.

BMW 520i has classical rear wheel drive (RWD) and manual gearbox with 4 gears.
BMW 520i accelerates to speed 100 kilometres per hour in 11.3 seconds. The maximum speed of this car is 181 km/h.

The fuel consumption of this BMW 520i in combined mode (combining urban and highway driving) is 9.5 litres per 100km (10.5 km/l) - this is the most fuel efficient BMW 5 sērija 1974 - 1981 version. Fuel tank capacity is 70 litres or 18.49 gallons, which gives a mileage up to 720 kilometers without refueling in urban cycle.

BMW 5 series 1974

BMW 520i technical data

Model: BMW 520i
Body style: Sedan
Production period: 1976. January ... 1979. December 
Engine: 1990 cm3 Petrol CO2 emissions: no data
Power: 125 HP ON 5800 RPM Torque: 170 NM ON 4000 RPM
Gearbox: Manual gearbox (4 gears) Drive type: Rear wheel drive (RWD)
Maximum speed: 181 km/h Acceleration 0-100 km/h: 11.3 seconds
Fuel consumption (l/100km): 9.5 (combined)
Fuel tank capacity: 70 litres (18.5 gallons)
Car dimensions: 4.62m (length) 1.69m (width) 1.42m (height)
Ground clearance: 140 mm (approximate, with standard suspension, unladen vehicle)
Trunk capacity: 440 litres

BMW 520i engine M10B20

Engine reliability:

Overall, this engine can last around 280,000 to 480,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
Engine displacement 1990 cm3
Number of cylinders 4
Bore (cylinder diameter) 89 mm
Stroke length (piston move) 80 mm
Compression ratio 8.1 : 1
Camshaft drive Timing chain

Chain motors are considered more reliable, chain replacement usually is required less often than a timing belt, but they are often louder and vibrate more.

Fuel system Carburettor or injector
BMW 520i oil type 5W-40
Oil capacity 4.2 litres (4.4 quarts)
Power 100 - 130 HP ON 5800 RPM
Torque 152 - 177 NM ON 4000 RPM
Start of production (year) 1962
Duration of production 25 years
Engine also used on BMW 3 sērija

All BMW 5 series sedan [1974 - 1981] modifications

Modification Engine Power Consumption Gearbox
BMW 518 Mai 1974 — Aug 1981 1.8 Petrol 90 HP 10.0 l/100km Manual (4)
BMW 518 Mai 1974 — Aug 1981 1.8 Petrol 90 HP 10.0 l/100km Automatic (4)
BMW 520 Oct 1977 — Aug 1981 2.0 Petrol 122 HP 10.0 l/100km Manual (4)
BMW 520 Oct 1977 — Aug 1981 2.0 Petrol 122 HP 10.0 l/100km Automatic (4)
BMW 520i Jan 1976 — Dec 1979

Most fuel efficient version

2.0 Petrol 125 HP 9.5 l/100km Manual (4)
BMW 525 Feb 1974 — Aug 1981 2.5 Petrol 150 HP 11.0 l/100km Manual (4)
BMW 525 Feb 1974 — Aug 1981 2.5 Petrol 150 HP 12.0 l/100km Automatic (4)
BMW 528 Jan 1976 — Dec 1977 2.8 Petrol 170 HP 10.8 l/100km Manual (4)
BMW 528i Jan 1977 — Dec 1978 2.8 Petrol 177 HP 10.6 l/100km Manual (5)
BMW 528i Jul 1977 — Aug 1981 2.8 Petrol 184 HP 12.0 l/100km Manual (4)
BMW 528i Jul 1977 — Aug 1981 2.8 Petrol 184 HP 12.0 l/100km Automatic (4)
BMW M 535i Jan 1980 — Dec 1981

Most dynamic version - 100 km/h in 7.2 seconds

3.5 Petrol 218 HP - Manual (5)
BMW 5 series 1974 reviews
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