The 3.5-liter gasoline V6 engine Hyundai G6AU was produced only from 1994 to 1999 and was installed on top modifications of the most expensive Grandeur and Dynasty models. This power unit is essentially a clone of the 24-valve version of the Mitsubishi 6G74 engine.
Sigma family:
2.5 L – G6AV;
3.0 L – G6AT, G6CT;
3.5 L – G6AU, G6CU.
Specifications
| Production years | 1994-1999 |
| Displacement, cc | 3497 |
| Fuel system | distributed injection |
| Power output, hp | 225 |
| Torque output, Nm | 305 |
| Cylinder block | cast iron V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 93 |
| Piston stroke, mm | 85.8 |
| Compression ratio | 10.0 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 4.3 |
| Fuel type | petrol |
| Euro standards | EURO 2 |
| Fuel consumption, L/100 km (for Hyundai Dynasty 1997) — city — highway — combined |
17.2 10.5 12.7 |
| Engine lifespan, km | ~200 000 |
| Weight, kg | 199 |
The engine was installed on:
- Hyundai Dynasty 1 (LX) in 1996 – 1999;
- Hyundai Grandeur 2 (LX) in 1994 – 1996.
Disadvantages of the Hyundai G6AU engine
- The main problems of the engine are related to the quality of the assembly and its components;
- On specialized forums, many cases of liners turning on a run of 50,000 km are described;
- By 100,000 km, an oil burn of 1 liter per thousand km or more usually appears;
- Hydraulic lifters and belt tensioner are not very large resource;
- And here the engine speed often floats due to contamination of the throttle, idle speed controller or injectors.
Frequently asked questions about the Hyundai G6AU
How much power does the Hyundai G6AU make?
The Hyundai G6AU develops 225 hp and 305 Nm of torque.
How much oil does the Hyundai G6AU take and which one?
Engine oil capacity: 4.3 liters. Recommended oil: 5W-40.
Does the Hyundai G6AU have a timing belt or chain?
The Hyundai G6AU uses a timing belt.
Is the Hyundai G6AU turbocharged?
No, the Hyundai G6AU is naturally aspirated.
Does the Hyundai G6AU need valve clearance adjustment?
No, the Hyundai G6AU has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai G6AU last?
The typical lifespan of the Hyundai G6AU is ~200 000 km with proper maintenance.
What is the fuel consumption of the Hyundai G6AU?
Hyundai Dynasty 1997: city 17.2, highway 10.5, combined 12.7 L/100 km.
What cars was the Hyundai G6AU installed on?
Hyundai Dynasty 1 (LX) in 1996 - 1999; Hyundai Grandeur 2 (LX) in 1994 - 1996.
What are the common problems of the Hyundai G6AU?
The main problems of the engine are related to the quality of the assembly and its components. On specialized forums, many cases of liners turning on a run of 50,000 km are described. All known problems.
