BMW 525tds (E34)

BMW 5 series 1988 2.5 diesel description

Sedan BMW 525tds has been produced from October, 1991 to December, 1995. It has six-cylinder diesel engine with displacement of 2.5 litres, which produces power of 143 horsepower on 4800 rpm and torque 260 Nm (Newton metres) on 2200 revolutions per minute.

This 6-cylinder 12-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has precombustion chamber fuel system and MHI TD0411G5 turbine. Engine versions compliant with Euro 1 and Euro 2 emission standards available. Engine lifespan (mileage before major repairs or overhaul) can last from 270 up to 450 thousand kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
This BMW 5 series 2.5 engine oil type is 5W-40 and oil capacity is 6.5 litres.

BMW 525tds has classical rear wheel drive (RWD) and automatic gearbox with 5 gears.
BMW 525tds accelerates to speed 100 kilometres per hour in 12 seconds. The maximum speed of this car is 205 km/h.

BMW 525tds fuel consumption is 7.2 litres per 100km in combined city/highway mode (13.9 km/l) - this is one of most fuel efficient BMW 5 sērija 1988 - 1995 versions. Fuel tank capacity is 80 litres or 21.14 gallons, which gives a mileage up to 1100 kilometers without refueling in urban cycle.
According to user reviews, this BMW real everyday fuel consumption is 8.9 litres per 100 km, which is 24% more than the manufacturer's stated. More - Real BMW 5 series fuel consumption.

With the same engine there is also BMW 5 series version with manual gearbox (BMW 525tds MT) available, which is more dynamic - it reaches 100 km/h 1 seconds faster (in 11 seconds), moreover, it is more economic with manufacturer's fuel consumption is lower by 0.2 litres per 100 km or 3 % - 7.0 litres per 100 km, whereas users reported real fuel consumption is lower by 0.9 litres per 100 km or 10 % - 8.0 litres per 100 km.
BMW 5 series 1988

BMW 525tds technical data

Model: BMW 525tds
Body style: Sedan
Production period: 1991. October ... 1995. December 
Engine: 2497 cm3 Diesel, 6 cylinders CO2 emissions: no data
Power: 143 HP ON 4800 RPM Torque: 260 NM ON 2200 RPM
Gearbox: Automatic gearbox (5 gears) Drive type: Rear wheel drive (RWD)
Top speed: 205 km/h Acceleration 0-100 km/h: 12.0 seconds
Fuel consumption (l/100km): 7.2 (combined)
Real fuel consumption: 8.9 l/100km (26.4 MPG) by user reviews from various sources
Fuel tank capacity: 80 litres (21.1 gallons)
Car dimensions: 4.72m (length) 1.75m (width) 1.41m (height)
Turning diameter: 11 meters
Trunk capacity: 460 litres
Gross weight: 2025 kg

BMW 525tds engine M51D25 OL

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.
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) 80 mm
Stroke length (piston move) 82.8 mm
Compression ratio 22 : 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 Precombustion chamber
BMW 525tds oil type 5W-40
Oil capacity 6.5 litres (6.9 quarts)
Power 143 HP ON 4800 RPM
Torque 260 NM ON 2200 RPM
Start of production (year) 1991
Duration of production 10 years

Often in the first years of production, engines tend to have various constructive problems, so it is recommended to choose a car with this engine from 1994 onwards.

Engine also used on BMW 3 sērija

All BMW 5 series sedan [1988 - 1995] modifications

Modification Engine Power Consumption Gearbox Drive type
BMW 518i Oct 1989 — Jan 1994

Most fuel efficient petrol version by real consumption

1.8 Petrol 113 HP 8.6 l/100km Manual (5) Rear wheel
BMW 518i Oct 1992 — Mai 1995

Most fuel efficient petrol version

1.8 Petrol 116 HP 8.1 l/100km Manual (5) Rear wheel
BMW 518iN Jan 1994 — Dec 1995

Most fuel efficient petrol version

1.8 Petrol 116 HP 8.1 l/100km Manual (5) Rear wheel
BMW 518iN Jan 1994 — Dec 1995 1.8 Petrol 116 HP 8.6 l/100km Automatic (4) Rear wheel
BMW 518i Apr 1994 — Mai 1995 1.8 Petrol 116 HP 8.6 l/100km Automatic (4) Rear wheel
BMW 520i Jan 1988 — Apr 1990 2.0 Petrol 129 HP 10.0 l/100km Manual (5) Rear wheel
BMW 520i Jan 1988 — Apr 1990 2.0 Petrol 129 HP 10.0 l/100km Automatic (4) Rear wheel
BMW 520i Apr 1990 — Dec 1995 2.0 Petrol 150 HP 8.9 l/100km Manual (5) Rear wheel
BMW 520i Apr 1990 — Dec 1995 2.0 Petrol 150 HP 9.0 l/100km Automatic (5) Rear wheel
BMW 524td Jan 1988 — Oct 1991 2.4 Diesel 116 HP 7.1 l/100km Manual (5) Rear wheel
BMW 524td Jan 1988 — Oct 1991 2.4 Diesel 116 HP 7.3 l/100km Automatic (4) Rear wheel
BMW 525i Jan 1988 — Apr 1990 2.5 Petrol 170 HP 9.5 l/100km Manual (5) Rear wheel
BMW 525i Jan 1988 — Apr 1990 2.5 Petrol 170 HP 9.8 l/100km Automatic (4) Rear wheel
BMW 525i Apr 1990 — Dec 1995 2.5 Petrol 192 HP 9.0 l/100km Manual (5) Rear wheel
BMW 525i Apr 1990 — Dec 1995 2.5 Petrol 192 HP 8.8 l/100km Automatic (5) Rear wheel
BMW 525iX 4x4 Oct 1991 — Dec 1995 2.5 Petrol 192 HP 9.6 l/100km Manual (5) All wheel
BMW 525iX 4x4 Oct 1991 — Dec 1995 2.5 Petrol 192 HP 9.5 l/100km Automatic (5) All wheel
BMW 525td Mai 1993 — Dec 1995

Most fuel efficient diesel version by real consumption

2.5 Diesel 115 HP 7.1 l/100km Manual (5) Rear wheel
BMW 525td Mai 1993 — Dec 1995 2.5 Diesel 115 HP 7.3 l/100km Automatic (4) Rear wheel
BMW 525tds Oct 1991 — Dec 1995

Most powerfull diesel version (143 HP)
Most fuel efficient diesel version

2.5 Diesel 143 HP 7.0 l/100km Manual (5) Rear wheel
BMW 525tds Oct 1991 — Dec 1995

Most powerfull diesel version (143 HP)

2.5 Diesel 143 HP 7.2 l/100km Automatic (5) Rear wheel
BMW 530i Jan 1988 — Apr 1990 3.0 Petrol 188 HP 11.0 l/100km Manual (5) Rear wheel
BMW 530i Jan 1988 — Apr 1990 3.0 Petrol 188 HP 11.0 l/100km Automatic (4) Rear wheel
BMW 530i Oct 1992 — Dec 1995 3.0 Petrol 218 HP 11.0 l/100km Manual (5) Rear wheel
BMW 530i Oct 1992 — Dec 1995 3.0 Petrol 218 HP 10.0 l/100km Automatic (5) Rear wheel
BMW 535i Jan 1988 — Oct 1992 3.4 Petrol 211 HP 11.0 l/100km Manual (5) Rear wheel
BMW 535i Jan 1988 — Oct 1992 3.4 Petrol 211 HP 12.0 l/100km Automatic (4) Rear wheel
BMW 540i V8 Jan 1992 — Dec 1995

Most dynamic version - 100 km/h in 6.3 seconds

4.0 Petrol 286 HP 11.4 l/100km Manual (6) Rear wheel
BMW 540i Oct 1992 — Dec 1995

Most powerfull petrol version (286 HP)

4.0 Petrol 286 HP 12.0 l/100km Automatic (5) Rear wheel
BMW 5 series 1988 reviews
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