BMW 325i (E90)

BMW 3 series 2008 2.5 petrol description

Sedan BMW 325i has been produced from September, 2008 to January, 2012. It has six-cylinder petrol engine with displacement of 2.5 litres, which produces power of 218 horsepower on 6500 rpm and torque 250 Nm (Newton metres) on 2750 revolutions per minute.

This 6-cylinder 24-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system without turbocharger. Engine versions compliant with Euro 4 and Euro 5 emission standards available. Average engine life expectancy (mileage before serious repairs are needed) is from 220 000 to 370 000 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 
On this engine, the valve seals and crankcase breather valve diaphragm tend to fail after  ...  This BMW 3 series 2.5 engine oil type is 5W-30 and oil capacity is 6.5 litres.

BMW 325i has classical rear wheel drive (RWD) and automatic gearbox with 6 gears.
BMW 325i accelerates to speed 100 kilometres per hour in 7.1 seconds. The maximum speed of this car is 248 km/h.

The fuel consumption of this BMW 325i in combined mode (combining urban and highway driving) is 7.1 litres per 100km (14.1 km/l), fuel consumption in city - 9.7 l/100km, highway fuel economy - 5.6 l/100km. Fuel tank capacity is 63 litres or 16.64 gallons, which gives a mileage up to 880 kilometers without refueling in urban cycle and even up to 1120 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 9.7 litres per 100 km, which is 37% more than the manufacturer's stated. More - Real BMW 3 series fuel consumption.

With the same engine there are also three other BMW 3 series versions - with manual gearbox (BMW 325i MT), and with four wheel (4x4) drive and manual gearbox (BMW 325i xDrive MT 4x4), and with four wheel (4x4) drive and automatic gearbox (BMW 325i xDrive AT 4x4) available:
  • BMW 325i MT is more dynamic - it reaches 100 km/h 0.4 seconds faster (in 6.7 seconds), but manufacturer's fuel consumption is similar - 7.1 litres per 100 km, whereas users reported real fuel consumption is lower by 0.8 litres per 100 km or 8 % - 8.9 litres per 100 km
  • BMW 325i xDrive MT 4x4 manufacturer's fuel consumption is higher by 0.8 litres per 100 km or 11 % - 7.9 litres per 100 km, whereas users reported real fuel consumption is lower by 0.8 litres per 100 km or 8 % - 8.9 litres per 100 km
  • BMW 325i xDrive AT 4x4 is more sluggish, reaching 100 km/h 0.6 seconds later (in 7.7 seconds), but manufacturer's fuel consumption is higher by 0.8 litres per 100 km or 11 % - 7.9 litres per 100 km, whereas users reported real fuel consumption is similar - 9.7 litres per 100 km
BMW 3 series 2.5 service information and maintenance intervals Oil change intervals, capacities and specifications, service information for filters, spark plugs, belts etc.
BMW 3 series 2008

BMW 325i technical data

Model: BMW 325i
Body style: Sedan
Production period: 2008. September ... 2012. January 
Engine: 2497 cm3 Petrol, 6 cylinders CO2 emissions: 170 g/km
Power: 218 HP ON 6500 RPM Torque: 250 NM ON 2750 RPM
Gearbox: Automatic gearbox (6 gears) Drive type: Rear wheel drive (RWD)
Maximum speed: 248 km/h Acceleration 0-100 km/h: 7.1 seconds
Fuel consumption (l/100km): 7.1 (combined) 9.7 (urban) 5.6 (highway)
Real fuel consumption: 9.7 l/100km (24.2 MPG) by user reviews from various sources
Fuel tank capacity: 63 litres (16.6 gallons)
Car dimensions: 4.53m (length) 1.82m (width) 1.42m (height)
Turning diameter: 11 meters
Trunk capacity: 460 litres
Gross weight: 1980 kg

BMW 325i engine N52B25

Engine reliability and common problems:

On this engine, the valve seals and crankcase breather valve diaphragm tend to fail after 80-100 000 km, leading to increased oil consumption. It is recommended to choose engines manufactured in the last years of production (after 2010). The engine is not suitable for power boost modifications.
Overall, this engine can last around 220,000 to 370,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
Engine displacement 2497 cm3
Number of cylinders 6
Bore (cylinder diameter) 82 mm
Stroke length (piston move) 78.8 mm
Compression ratio 11 : 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.

More service info
Timing chain change interval 120,000 km (recommended)

Sometimes manufacturers do not specify timing chain replacement intervals and design chains for engine life. However, once the recommended change interval has been reached, it is recommended to periodically check the condition of the chain and to change the chain if excessive stretching is detected or if unusual noises from the engine or other symptoms occur.

Fuel system Injection
BMW 325i oil type 5W-30
Oil capacity 6.5 litres (6.9 quarts) More service info
Power 177 - 218 HP ON 6500 RPM
Torque 230 - 250 NM ON 2750 RPM
Start of production (year) 2004
Duration of production 7 years
Engine also used on BMW 5 sērija BMW X3 BMW Z4

Generally, the use of an engine in several models and its long production run is an indication of the quality of the engine and the success of its design.

All BMW 3 series sedan [2008 - 2012] modifications

Modification Engine Power Consumption Gearbox Drive type
BMW 316i

Most fuel efficient petrol version

1.6 Petrol 122 HP 5.9 l/100km Manual (6) Rear wheel
BMW 316i 1.6 Petrol 122 HP 6.4 l/100km Automatic (6) Rear wheel
BMW 318i

Most fuel efficient petrol version

2.0 Petrol 143 HP 5.9 l/100km Manual (6) Rear wheel
BMW 318i 2.0 Petrol 143 HP 6.4 l/100km Automatic (6) Rear wheel
BMW 320i 2.0 Petrol 170 HP 6.1 l/100km Manual (6) Rear wheel
BMW 320i 2.0 Petrol 170 HP 6.5 l/100km Automatic (6) Rear wheel
BMW 318d

Most fuel efficient diesel version

2.0 Diesel 143 HP 4.7 l/100km Manual (6) Rear wheel
BMW 318d 2.0 Diesel 143 HP 5.4 l/100km Automatic (6) Rear wheel
BMW 320d 2.0 Diesel 177 HP 4.8 l/100km Manual (6) Rear wheel
BMW 320d 2.0 Diesel 177 HP 5.4 l/100km Automatic (6) Rear wheel
BMW 320d xDrive 4x4 2.0 Diesel 177 HP 5.4 l/100km Manual (6) All wheel
BMW 320d xDrive 4x4 2.0 Diesel 177 HP 5.9 l/100km Automatic (6) All wheel
BMW 325i 2.5 Petrol 218 HP 7.1 l/100km Manual (6) Rear wheel
BMW 325i 2.5 Petrol 218 HP 7.1 l/100km Automatic (6) Rear wheel
BMW 325i xDrive 4x4 2.5 Petrol 218 HP 7.9 l/100km Manual (6) All wheel
BMW 325i xDrive 4x4 2.5 Petrol 218 HP 7.9 l/100km Automatic (6) All wheel
BMW 330i 3.0 Petrol 272 HP 7.2 l/100km Manual (6) Rear wheel
BMW 330i 3.0 Petrol 272 HP 7.2 l/100km Automatic (6) Rear wheel
BMW 330i xDrive 4x4 3.0 Petrol 272 HP 8.0 l/100km Manual (6) All wheel
BMW 330i xDrive 4x4 3.0 Petrol 272 HP 8.0 l/100km Automatic (6) All wheel
BMW 335i 3.0 Petrol 306 HP 9.1 l/100km Manual (6) Rear wheel
BMW 335i 3.0 Petrol 306 HP 6.9 l/100km Automatic (6) Rear wheel
BMW 335i xDrive 4x4

Most dynamic version - 100 km/h in 5.5 seconds

3.0 Petrol 306 HP 9.7 l/100km Manual (6) All wheel
BMW 335i xDrive 4x4 3.0 Petrol 306 HP 9.7 l/100km Automatic (6) All wheel
BMW 325d 3.0 Diesel 197 HP 5.7 l/100km Manual (6) Rear wheel
BMW 325d 3.0 Diesel 197 HP 6.2 l/100km Automatic (6) Rear wheel
BMW 330d 3.0 Diesel 245 HP 5.7 l/100km Manual (6) Rear wheel
BMW 330d 3.0 Diesel 245 HP 6.2 l/100km Automatic (6) Rear wheel
BMW 330d xDrive 4x4 3.0 Diesel 245 HP 6.5 l/100km Manual (6) All wheel
BMW 330d xDrive 4x4 3.0 Diesel 245 HP 6.8 l/100km Automatic (6) All wheel
BMW 335d

Most powerfull diesel version (286 HP)

3.0 Diesel 286 HP 6.7 l/100km Automatic (6) Rear wheel
BMW 3 series 2008 reviews
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