GS III (S190) vs IS II (XE20): which is better?
Lexus GS III (S190) (2005–2011) vs Lexus IS II (XE20) (2005–2013): specs, fuel economy, tax and common problems.
Lexus GS III (S190)
Lexus IS II (XE20)Specifications
| Lexus GS III (S190) | Lexus IS II (XE20) | |
|---|---|---|
| Production years | 2005–2011 | 2005–2013 |
| Body | sedan | sedan |
| Fuel | petrol | petrol |
| Engines | 3.0 V6 (GS300) | 2.5 V6 (IS250) |
| Power, up to | 249 hp | 208 hp |
| Torque, up to | 310 Nm | 252 Nm |
| Gearbox | automatic | automatic |
| Drive | rear-wheel drive | rear-wheel drive |
| Length | 4 825 mm | 4 575 mm |
| Width | 1 820 mm | 1 795 mm |
| Height | 1 425 mm | 1 425 mm |
| Wheelbase | 2 850 mm | 2 730 mm |
| Fuel tank | 71 L | 65 L |
| KZ tax 2026 (car under 10 years) | ≈ 42 425 ₸ | ≈ 29 450 ₸ |
The better value is highlighted in green.
Pros, cons and common problems
Lexus GS III (S190)
Pros
- Gearbox Aisin automatic: generally reliable
- Powerful versions: up to 249 hp
- Large tank: 71 L
- Sold in all major markets of the region — parts and mechanics available
Cons
- Lexus 3GR/4GR-FSE (V6) engine: carbon buildup on intake valves due to direct injection
- Gearbox Aisin automatic: valve body wear at high mileage
Engine (Lexus 3GR/4GR-FSE (V6)): carbon buildup on intake valves due to direct injection; oil consumption.
Gearbox (Aisin automatic): generally reliable; at high mileage — valve body wear.
Lexus IS II (XE20)
Pros
- Gearbox Aisin automatic: generally reliable
- Powerful versions: up to 208 hp
- Sold in all major markets of the region — parts and mechanics available
Cons
- Lexus 3GR/4GR-FSE (V6) engine: carbon buildup on intake valves due to direct injection
- Gearbox Aisin automatic: valve body wear at high mileage
Engine (Lexus 3GR/4GR-FSE (V6)): carbon buildup on intake valves due to direct injection; oil consumption.
Gearbox (Aisin automatic): generally reliable; at high mileage — valve body wear.
Which one to choose
- GS III (S190) — if you care more about: power, torque, wheelbase, fuel tank.
- IS II (XE20) — if you care more about: 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: GS III (S190) or IS II (XE20)?
GS III (S190): up to 249 hp, IS II (XE20): up to 208 hp.
What is the vehicle tax in Kazakhstan?
For 2026, for a car under 10 years old: GS III (S190) — about 42 425 ₸, IS II (XE20) — about 29 450 ₸ (base engine). A 0.7 factor applies to cars aged 10–20 years and 0.5 to cars over 20.