Audi A8 1994 2.5 TDI Automatic

Audi A8 1994 2.5 diesel description

Sedan Audi A8 1994 2.5 TDI Automatic has been produced from August, 1997 to January, 1999. It has six-cylinder diesel engine with displacement of 2.5 litres, which produces power of 150 horsepower on 4000 rpm and torque 310 Nm (Newton metres) on 1500 revolutions per minute.

This 6-cylinder 24-valve engine camshaft is driven by belt (What is an engine chain and belt? ). Engine has fuel injection system and VGT turbine. The engine meets the Euro 2 emissions standard. Average engine life expectancy (mileage before serious repairs are needed) is from 220 000 to 370 000 kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
This Audi A8 2.5 engine oil type is 5W-30 and oil capacity is 6 litres.

Audi A8 1994 2.5 TDI Automatic has front wheel drive (FWD) and automatic gearbox with 5 gears.
Audi A8 1994 2.5 TDI Automatic accelerates to speed 100 kilometres per hour in 11 seconds. The maximum speed of this car is 214 km/h.

The fuel consumption of this Audi A8 1994 2.5 TDI Automatic in combined mode (combining urban and highway driving) is 8.2 litres per 100km (12.2 km/l) - this is one of most fuel efficient Audi A8 1994 - 1999 versions, city fuel economy - 11.6 l/100km, fuel consumption on highway - 6.2 l/100km. Fuel tank capacity is 90 litres or 23.78 gallons, which gives a mileage up to 1080 kilometers without refueling in urban cycle and even up to 1440 kilometers on highway.
According to user reviews, the real everyday fuel consumption of this Audi is in line with the figure specified by the manufacturer. More - Real Audi A8 fuel consumption.

With the same engine there are also two other Audi A8 versions - with manual gearbox (Audi A8 1997 2.5 TDI MT), and with four wheel (4x4) drive and automatic gearbox (Audi A8 1997 2.5 TDI Quattro AT 4x4) available:
  • Audi A8 1997 2.5 TDI MT is more dynamic - it reaches 100 km/h 1.1 seconds faster (in 9.9 seconds), moreover, it is more economic with manufacturer's fuel consumption is lower by 0.9 litres per 100 km or 11 % - 7.3 litres per 100 km, whereas users reported real fuel consumption is lower by 1.8 litres per 100 km or 21 % - 6.6 litres per 100 km
  • Audi A8 1997 2.5 TDI Quattro AT 4x4 is more sluggish, reaching 100 km/h 0.3 seconds later (in 11.3 seconds), but manufacturer's fuel consumption is higher by 0.7 litres per 100 km or 9 % - 8.9 litres per 100 km, whereas users reported real fuel consumption is similar - 8.4 litres per 100 km
Audi A8 1994

Audi A8 1994 2.5 TDI Automatic technical data

Model: Audi A8 2.5 TDI Automatic
Body style: Sedan
Production period: 1997. August ... 1999. January 
Engine: 2496 cm3 Diesel, 6 cylinders CO2 emissions: no data
Power: 150 HP ON 4000 RPM Torque: 310 NM ON 1500 RPM
Gearbox: Automatic gearbox (5 gears) Drive type: Front wheel drive (FWD)
Maximum speed: 214 km/h Acceleration 0-100 km/h: 11.0 seconds
Fuel consumption (l/100km): 8.2 (combined) 11.6 (urban) 6.2 (highway)
Real fuel consumption: 8.4 l/100km (28 MPG) by user reviews from various sources
Fuel tank capacity: 90 litres (23.8 gallons)
Car dimensions: 5.03m (length) 1.88m (width) 1.44m (height)
Turning diameter: 12.3 meters
Seats: 5 seats
Trunk capacity: 525 litres
Gross weight: 2225 kg

Audi A8 1994 2.5 TDI Automatic engine AFB

Engine reliability:

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 2496 cm3
Number of cylinders 6
Bore (cylinder diameter) 78.3 mm
Stroke length (piston move) 86.4 mm
Compression ratio 19.5 : 1
Camshaft drive Timing belt

Timing belt engines are generally quieter and less vibrating than chain engines, but belt usually needs to be replaced more often and the risk of breakage is higher.

Fuel system Injection
Audi A8 1994 2.5 TDI Automatic oil type 5W-30
Oil capacity 6 litres (6.3 quarts)
Coolant capacity 8 litres (8.5 quarts)
Power 150 HP ON 4000 RPM
Torque 310 NM ON 1500 RPM
Start of production (year) 1997
Duration of production 2 years
Engine also used on Audi A6 Audi A4

All Audi A8 sedan [1994 - 1999] modifications

Modification Engine Power Consumption Gearbox Drive type
Audi A8 1997 2.5 TDI Aug 1997 — Jan 1999

Most fuel efficient diesel version

2.5 Diesel 150 HP 7.3 l/100km Manual (6) Front wheel
Audi A8 1997 2.5 TDI Automatic Aug 1997 — Jan 1999 2.5 Diesel 150 HP 8.2 l/100km Automatic (5) Front wheel
Audi A8 1997 2.5 TDI Quattro 4x4 Aug 1997 — Jan 1999 2.5 Diesel 150 HP 8.9 l/100km Automatic (5) All wheel
Audi A8 1994 2.8 Nov 1994 — Apr 1996

Most fuel efficient petrol version

2.8 Petrol 174 HP 9.9 l/100km Manual (5) Front wheel
Audi A8 1994 2.8 Automatic Nov 1994 — Apr 1996 2.8 Petrol 174 HP 10.7 l/100km Automatic (4) Front wheel
Audi A8 1994 2.8 Quattro 4x4 Nov 1994 — Apr 1996 2.8 Petrol 174 HP 11.1 l/100km Manual (5) All wheel
Audi A8 1994 2.8 Quattro Automatic 4x4 Nov 1994 — Apr 1996 2.8 Petrol 174 HP 11.7 l/100km Automatic (4) All wheel
Audi A8 1996 2.8 5V Apr 1996 — Jan 1999

Most fuel efficient petrol version

2.8 Petrol 193 HP 9.9 l/100km Manual (5) Front wheel
Audi A8 1996 2.8 5V Automatic Apr 1996 — Jan 1999

Most fuel efficient petrol version by real consumption

2.8 Petrol 193 HP 10.8 l/100km Automatic (5) Front wheel
Audi A8 1996 2.8 5V Quattro 4x4 Apr 1996 — Jan 1999 2.8 Petrol 193 HP 11.2 l/100km Manual (5) All wheel
Audi A8 1996 2.8 5V Quattro Automatic 4x4 Apr 1996 — Jan 1999

Most fuel efficient petrol version by real consumption

2.8 Petrol 193 HP 11.9 l/100km Automatic (5) All wheel
Audi A8 1995 3.7 Aug 1995 — Jan 1999 3.7 Petrol 230 HP 12.3 l/100km Automatic (5) Front wheel
Audi A8 1995 3.7 Quattro 4x4 Oct 1995 — Jan 1999 3.7 Petrol 230 HP 13.0 l/100km Automatic (5) All wheel
Audi A8 1994 4.2 Quattro 4x4

Most dynamic version - 100 km/h in 7.3 seconds

4.2 Petrol 300 HP 13.3 l/100km Automatic (4) All wheel
Audi A8 1994 reviews
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