From 1999 to 2003, the company assembled the 4.5-liter 32-valve Hyundai G8AA engine, which was fitted to the original Equus model and the Centennial limousine built around it. In essence, this power unit is a variant of the popular Mitsubishi 8A80 V8 engine.

G8AB engines are also part of the Omega family.
The engine was mounted on:
- Hyundai Equus 1 (LZ) in 1999 – 2003.
Specifications
| Production years | 1999-2003 |
| Displacement, cc | 4498 |
| Fuel system | direct injection |
| Power output, hp | 260 |
| Torque output, Nm | 380 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 96.8 |
| Compression ratio | 10.7 |
| Features | VIS |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.8 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Hyundai Equus 2000) — city — highway — combined |
19.7 9.5 12.1 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 230 (with attachments) |
Disadvantages of the Hyundai G8AA engine
The engine will run unsteadily without premium gasoline with a high octane rating;
Additionally, the intake valves of this unit experience rapid carbon formation;
Check the timing belt’s condition frequently, as a broken belt could kill the motor;
Catalysts can already break down after 100,000 kilometers and clog the exhaust with crumbs. The engine’s primary issue is a lack of spare parts and their exorbitant cost.
