7 Series G70 vs S-Class W223: which is better?
BMW 7 Series G70 (2022–present) vs Mercedes-Benz S-Class W223 (2020–present): specs, fuel economy, tax and common problems.
BMW 7 Series G70
Mercedes-Benz S-Class W223Specifications
| BMW 7 Series G70 | Mercedes-Benz S-Class W223 | |
|---|---|---|
| Production years | 2022–present | 2020–present |
| Body | sedan | sedan |
| Fuel | petrol | petrol |
| Engines | 3.0 Turbo (740i) | 3.0 Turbo (S500) |
| Power, up to | 380 hp | 435 hp |
| Torque, up to | 520 Nm | 520 Nm |
| Gearbox | automatic | automatic |
| Drive | rear-wheel drive | all-wheel drive |
| Length | 5 391 mm | 5 179 mm |
| Width | 1 950 mm | 1 954 mm |
| Height | 1 544 mm | 1 503 mm |
| Wheelbase | 3 215 mm | 3 106 mm |
| Fuel tank | 74 L | 76 L |
| KZ tax 2026 (car under 10 years) | ≈ 42 425 ₸ | ≈ 42 425 ₸ |
The better value is highlighted in green.
Pros, cons and common problems
BMW 7 Series G70
Pros
- Gearbox ZF 8HP: a reliable gearbox
- Powerful versions: up to 380 hp
- Large fuel tank: 74 L
- Currently in production — can be bought new
Cons
- Engine BMW B46/B48/B58: oil and coolant leaks at high mileage
- Gearbox ZF 8HP: rarely, mechatronics and bushings at high mileage
Engine (BMW B46/B48/B58): oil and coolant leaks at high mileage; water pump failures occur.
Gearbox (ZF 8HP): reliable gearbox; rarely — mechatronic and bushings at high mileage.
Mercedes-Benz S-Class W223
Pros
- Powerful versions: up to 435 hp
- Conventional automatic, no robotized gearbox or CVT
- Large fuel tank: 76 L
- Currently in production — can be bought new
Cons
- Engine Mercedes M254/M256/M276/M278/M176: complex engines, expensive to repair
- Gearbox Mercedes 9G-Tronic: jerky shifts when worn, software updates
Engine (Mercedes M254/M256/M276/M278/M176): engines are complex and expensive to repair; oil leaks and chain issues occur on M276/M278 at high mileage.
Gearbox (Mercedes 9G-Tronic): jerks when worn, software updates.
Which one to choose
- 7 Series G70 — if you care more about: wheelbase.
- S-Class W223 — if you care more about: power, fuel tank.
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: 7 Series G70 or S-Class W223?
7 Series G70: up to 380 hp, S-Class W223: up to 435 hp.
What is the vehicle tax in Kazakhstan?
For 2026, for a car under 10 years old: 7 Series G70 — about 42 425 ₸, S-Class W223 — about 42 425 ₸ (base engine). A 0.7 factor applies to cars aged 10–20 years and 0.5 to cars over 20.