BMW 525i (E28)
BMW 5 series 1981 2.5 petrol description
Sedan BMW 525i has been produced from August, 1981 to January, 1988. It has six-cylinder petrol engine with displacement of 2.5 litres, which produces power of 150 horsepower on 5500 rpm and torque 215 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 525i has classical rear wheel drive (RWD) and automatic gearbox with 4 gears.
BMW 525i accelerates to speed 100 kilometres per hour in 12 seconds. The maximum speed of this car is 195 km/h.
The fuel consumption of this BMW 525i in combined mode (combining urban and highway driving) is 10 litres per 100km (10 km/l). Fuel tank capacity is 70 litres or 18.49 gallons, which gives a mileage up to 700 kilometers without refueling in urban cycle.
BMW 525i technical data
| Model: | BMW 525i | ||
|---|---|---|---|
| Body style: | Sedan | ||
| Production period: | 1981. August ... 1988. January | ||
| Engine: | 2494 cm3 Petrol, 6 cylinders | CO2 emissions: | no data |
| Power: | 150 HP ON 5500 RPM | Torque: | 215 NM ON 4000 RPM |
| Gearbox: | Automatic gearbox (4 gears) | Drive type: | Rear wheel drive (RWD) |
| Maximum speed: | 195 km/h | Acceleration 0-100 km/h: | 12.0 seconds |
| Fuel consumption (l/100km): | 10.0 (combined) | ||
| Fuel tank capacity: | 70 litres (18.5 gallons) | ||
| Car dimensions: | 4.62m (length) 1.70m (width) 1.42m (height) | ||
| Turning diameter: | 11 meters | ||
| Ground clearance: | 140 mm (approximate, with standard suspension, unladen vehicle) | ||
| Trunk capacity: | 460 litres | ||
| Gross weight: | 1820 kg | ||
BMW 525i 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 525i oil type | 5W-30 |
| Oil capacity | 5.5 litres (5.8 quarts) |
| Coolant capacity | 12 litres (12.7 quarts) |
| Power | 145 - 150 HP ON 5500 RPM |
| Torque | 210 - 215 NM ON 4000 RPM |
| Start of production (year) | 1968 |
| Duration of production | 24 years |
Most often compared to
All BMW 5 series sedan [1981 - 1988] modifications
| Modification | Engine | Power | Consumption | Gearbox |
|---|---|---|---|---|
| BMW 518 Aug 1981 — Oct 1984 | 1.8 Petrol | 90 HP | 9.5 l/100km | Manual (5) |
|
BMW 518i
Oct 1984 — Jan 1988 Most fuel efficient petrol version |
1.8 Petrol | 105 HP | 8.0 l/100km | Manual (5) |
| BMW 520i Aug 1981 — Jul 1985 | 2.0 Petrol | 125 HP | 8.8 l/100km | Manual (5) |
| BMW 520i Aug 1981 — Jul 1985 | 2.0 Petrol | 125 HP | 8.7 l/100km | Automatic (4) |
| BMW 520i Jul 1985 — Jan 1988 | 2.0 Petrol | 129 HP | 9.2 l/100km | Manual (5) |
| BMW 520i Oct 1986 — Jan 1988 | 2.0 Petrol | 129 HP | 10.0 l/100km | Manual (5) |
| BMW 520i Jul 1985 — Jan 1988 | 2.0 Petrol | 129 HP | 8.7 l/100km | Automatic (4) |
| BMW 520i Oct 1986 — Jan 1988 | 2.0 Petrol | 129 HP | 9.8 l/100km | Automatic (4) |
| BMW 524d Oct 1986 — Jan 1988 | 2.4 Diesel | 86 HP | 7.4 l/100km | Manual (5) |
|
BMW 524td
Jul 1983 — Jan 1988 Most powerfull diesel version (115 HP) |
2.4 Diesel | 115 HP | 7.1 l/100km | Manual (5) |
|
BMW 524td
Jul 1983 — Jan 1988 Most powerfull diesel version (115 HP) |
2.4 Diesel | 115 HP | 7.2 l/100km | Automatic (4) |
| BMW 525i | 2.5 Petrol | 150 HP | 10.0 l/100km | Manual (5) |
| BMW 525i | 2.5 Petrol | 150 HP | 10.0 l/100km | Automatic (4) |
| BMW 525e Apr 1983 — Jan 1988 | 2.7 Petrol | 129 HP | 8.1 l/100km | Manual (5) |
| BMW 525e Apr 1983 — Jan 1988 | 2.7 Petrol | 129 HP | 8.3 l/100km | Automatic (4) |
| BMW 525e Oct 1986 — Jan 1988 | 2.7 Petrol | 129 HP | 8.8 l/100km | Automatic (4) |
| BMW 528i | 2.8 Petrol | 184 HP | 10.0 l/100km | Manual (5) |
| BMW 528i | 2.8 Petrol | 184 HP | 10.0 l/100km | Automatic (4) |
|
BMW 535i
Jul 1985 — Jan 1988 Most dynamic version - 100 km/h in 7.2 seconds |
3.4 Petrol | 218 HP | 10.0 l/100km | Manual (5) |
|
BMW 535i
Jul 1985 — Jan 1988 Most powerfull petrol version (218 HP) |
3.4 Petrol | 218 HP | 11.0 l/100km | Automatic (4) |