The 1.8-liter Volkswagen ADZ 8v engine was produced by the concern from 1994 to 1999 and was installed on the third generation of the popular Golf, Passat B4 and a number of cars from Seat. This mono-injection power unit is essentially an updated version of the ABS motor.
EA827 1.8l family: RP, AAM, ABS, ADZ, PF, ADR, ARG, AEB, ANB, JN.
Specifications
| Production years | 1994-1999 |
| Displacement, cc | 1781 |
| Fuel system | single injection |
| Power output, hp | 90 |
| Torque output, Nm | 145 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 8v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 86.4 |
| Compression ratio | 10.0 |
| Features | SOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 3.8 |
| Fuel type | petrol |
| Euro standards | EURO 1 |
| Fuel consumption, L/100 km (for VW Passat B4 1995) — city — highway — combined |
10.7 6.5 8.0 |
| Engine lifespan, km | ~320 000 |
The engine was installed on:
- Volkswagen Golf 3 (1H) in 1994 – 1999;
- Volkswagen Passat B4 (3A) in 1994 – 1996;
- Volkswagen Polo 3 (6N) in 1997 – 1999;
- Volkswagen Vento 1 (1H) in 1994 – 1998;
- Seat Cordoba 1 (6K) in 1994 – 1999;
- Seat Ibiza 2 (6K) in 1994 – 1996;
- Seat Toledo 1 (1L) in 1994 – 1999.
Disadvantages of the VW ADZ engine
- The main problems for owners are caused by failures in the operation of the mono-injection system.
- Regularly here you have to deal with leaks of lubricant or coolant.
- Due to throttle contamination or air leaks, engine speed often floats.
- More often than others, the lambda probe and the antifreeze temperature sensor fail here.
- By 200,000 km, rings or caps usually wear out and oil consumption appears.
Frequently asked questions about the Volkswagen ADZ
How much power does the Volkswagen ADZ make?
The Volkswagen ADZ develops 90 hp and 145 Nm of torque.
How much oil does the Volkswagen ADZ take and which one?
Engine oil capacity: 3.8 liters. Recommended oil: 5W-40.
Does the Volkswagen ADZ have a timing belt or chain?
The Volkswagen ADZ uses a timing belt.
Is the Volkswagen ADZ turbocharged?
No, the Volkswagen ADZ is naturally aspirated.
Does the Volkswagen ADZ need valve clearance adjustment?
No, the Volkswagen ADZ has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Volkswagen ADZ last?
The typical lifespan of the Volkswagen ADZ is ~320 000 km with proper maintenance.
What is the fuel consumption of the Volkswagen ADZ?
VW Passat B4 1995: city 10.7, highway 6.5, combined 8.0 L/100 km.
What cars was the Volkswagen ADZ installed on?
Volkswagen Golf 3 (1H) in 1994 - 1999; Volkswagen Passat B4 (3A) in 1994 - 1996; Volkswagen Polo 3 (6N) in 1997 - 1999; Volkswagen Vento 1 (1H) in 1994 - 1998; Seat Cordoba 1 (6K) in 1994 - 1999; Seat Ibiza 2 (6K) in 1994 - 1996 and 1 more (see the full list above).
What are the common problems of the Volkswagen ADZ?
The main problems for owners are caused by failures in the operation of the mono-injection system. Regularly here you have to deal with leaks of lubricant or coolant. All known problems.
