BMW 525tds (E34)

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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. Average engine life expectancy (mileage before serious repairs are needed) is from 270 000 to 450 000 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 manual gearbox with 5 gears.
BMW 525tds accelerates to speed 100 kilometres per hour in 11 seconds. The maximum speed of this car is 207 km/h.

The fuel consumption of this BMW 525tds in combined mode (combining urban and highway driving) is 7 litres per 100km (14.3 km/l) - this is the most fuel efficient BMW 5 sērija 1988 - 1995 version. Fuel tank capacity is 80 litres or 21.14 gallons, which gives a mileage up to 1140 kilometers without refueling in urban cycle.
According to user reviews, this BMW real everyday fuel consumption is 8 litres per 100 km, which is 14% 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 automatic gearbox (BMW 525tds AT) available, which is more sluggish, reaching 100 km/h 1 seconds later (in 12 seconds), moreover, it is less economic with manufacturer's fuel consumption is higher by 0.2 litres per 100 km or 3 % - 7.2 litres per 100 km, whereas users reported real fuel consumption is higher by 0.9 litres per 100 km or 11 % - 8.9 litres per 100 km.

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:	Manual gearbox (5 gears)	Drive type:	Rear wheel drive (RWD)
Maximum speed:	207 km/h	Acceleration 0-100 km/h:	11.0 seconds
Fuel consumption (l/100km):	7.0 (combined)
Real fuel consumption:	8 l/100km (29.4 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:	1990 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

Carmakers tend to use similar engines with different parameters for models available in different markets and time periods.

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Compare BMW 5 series 1988 2.5 diesel 1991 to other cars

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

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