BMW 525 (E12)
BMW 5 series 1974 2.5 petrol description
Sedan BMW 525 has been produced from February, 1974 to August, 1981. It has six-cylinder petrol engine with displacement of 2.5 litres, which produces power of 150 horsepower on 5800 rpm and torque 208 Nm (Newton metres) on 4000 revolutions per minute.
This 6-cylinder 12-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 270 000 to 450 000 kilometres. It is important to remember that engine life is highly dependent on regular maintenance and the quality of the oils and fuels used.
More engine specs
This BMW 5 series 2.5 engine oil type is 5W-30 and oil capacity is 5.5 litres.
BMW 525 has classical rear wheel drive (RWD) and automatic gearbox with 4 gears.
BMW 525 accelerates to speed 100 kilometres per hour in 13 seconds. The maximum speed of this car is 185 km/h.
The fuel consumption of this BMW 525 in combined mode (combining urban and highway driving) is 12 litres per 100km (8.3 km/l). Fuel tank capacity is 70 litres or 18.49 gallons, which gives a mileage up to 580 kilometers without refueling in urban cycle.
BMW 525 technical data
| Model: | BMW 525 | ||
|---|---|---|---|
| Body style: | Sedan | ||
| Production period: | 1974. February ... 1981. August | ||
| Engine: | 2494 cm3 Petrol, 6 cylinders | CO2 emissions: | no data |
| Power: | 150 HP ON 5800 RPM | Torque: | 208 NM ON 4000 RPM |
| Gearbox: | Automatic gearbox (4 gears) | Drive type: | Rear wheel drive (RWD) |
| Maximum speed: | 185 km/h | Acceleration 0-100 km/h: | 13.0 seconds |
| Fuel consumption (l/100km): | 12.0 (combined) | ||
| Fuel tank capacity: | 70 litres (18.5 gallons) | ||
| Car dimensions: | 4.62m (length) 1.69m (width) 1.42m (height) | ||
| Turning diameter: | 10 meters | ||
| Trunk capacity: | 620 litres | ||
| Gross weight: | 1810 kg | ||
BMW 525 engine M30B25
Engine reliability:
Overall, this engine can last around 270,000 to 450,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.| Engine displacement | 2494 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 86 mm |
| Stroke length (piston move) | 71.6 mm |
| Compression ratio | 9 : 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 525 oil type | 5W-30 |
| Oil capacity | 5.5 litres (5.8 quarts) |
| Power | 145 - 150 HP ON 5800 RPM |
| Torque | 210 - 215 NM ON 4000 RPM |
| Start of production (year) | 1968 |
| Duration of production | 24 years |
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) |