A6 C4 vs Omega B: which is better?
Audi A6 C4 (1994–1997) vs Opel Omega B (1994–2003): specs, fuel economy, tax and common problems.
Audi A6 C4
Opel Omega BSpecifications
| Audi A6 C4 | Opel Omega B | |
|---|---|---|
| Production years | 1994–1997 | 1994–2003 |
| Body | sedan | sedan |
| Fuel | petrol | petrol |
| Engines | 2.6 V6 | 2.0 |
| Power, up to | 150 hp | 136 hp |
| Torque, up to | 225 Nm | 185 Nm |
| Gearbox | manual | manual |
| Drive | front-wheel drive | rear-wheel drive |
| Length | 4 796 mm | 4 787 mm |
| Width | 1 783 mm | 1 786 mm |
| Height | 1 430 mm | 1 455 mm |
| Wheelbase | 2 687 mm | 2 730 mm |
| Fuel tank | 80 L | 75 L |
| KZ tax 2026 (car under 10 years) | ≈ 39 625 ₸ | ≈ 16 475 ₸ |
The better value is highlighted in green.
Pros, cons and common problems
Audi A6 C4
Pros
- Large tank: 80 L
- Sold in all major markets of the region — parts and mechanics available
Cons
- Age: the last cars were built in 1997, condition is everything
Opel Omega B
Pros
- Large tank: 75 L
- Sold in all major markets of the region — parts and mechanics available
Cons
- Age: the last cars were built in 2003, condition is everything
Which one to choose
- A6 C4 — if you care more about: power, torque, fuel tank.
- Omega B — if you care more about: wheelbase, kz tax 2026.
The condition of a specific car matters more than the model: check the service history and get the engine and gearbox inspected before buying.
FAQ
Which is more powerful: A6 C4 or Omega B?
A6 C4: up to 150 hp, Omega B: up to 136 hp.
What is the vehicle tax in Kazakhstan?
For 2026, for a car under 10 years old: A6 C4 — about 39 625 ₸, Omega B — about 16 475 ₸ (base engine). A 0.7 factor applies to cars aged 10–20 years and 0.5 to cars over 20.