FX / QX70 S51 (FX / QX70) vs RX III (AL10): which is better?
Infiniti FX / QX70 S51 (FX / QX70) (2008–2017) vs Lexus RX III (AL10) (2009–2015): specs, fuel economy, tax and common problems.
Infiniti FX / QX70 S51 (FX / QX70)
Lexus RX III (AL10)Specifications
| Infiniti FX / QX70 S51 (FX / QX70) | Lexus RX III (AL10) | |
|---|---|---|
| Production years | 2008–2017 | 2009–2015 |
| Body | crossover SUV | crossover SUV |
| Fuel | petrol | petrol |
| Engines | 3.5 V6 (FX35 / QX70) | 3.5 V6 (RX350) |
| Power, up to | 307 hp | 277 hp |
| Torque, up to | 355 Nm | 346 Nm |
| Gearbox | automatic | automatic |
| Drive | all-wheel drive | all-wheel drive |
| Length | 4 865 mm | 4 770 mm |
| Width | 1 925 mm | 1 885 mm |
| Height | 1 680 mm | 1 720 mm |
| Wheelbase | 2 885 mm | 2 740 mm |
| Fuel tank | 90 L | 72 L |
| KZ tax 2026 (car under 10 years) | ≈ 68 375 ₸ | ≈ 68 375 ₸ |
The better value is highlighted in green.
Pros, cons and common problems
Infiniti FX / QX70 S51 (FX / QX70)
Pros
- Gearbox Jatco RE (Nissan/Infiniti automatic): generally reliable
- Powerful versions: up to 307 hp
- All-wheel-drive versions available
- Large fuel tank: 90 L
Cons
- Engine Nissan VQ (V6): oil consumption on some engines
- Gearbox Jatco RE (Nissan/Infiniti automatic): at high mileage, shift shocks and valve body wear
Engine (Nissan VQ (V6)): oil consumption on some engines; catalytic converter breakdown and cylinder scoring; valve cover leaks.
Gearbox (Jatco RE (Nissan/Infiniti automatic)): generally reliable; at high mileage — shocks and valve body wear.
Lexus RX III (AL10)
Pros
- Powerful versions: up to 277 hp
- All-wheel-drive versions available
- Japanese Aisin automatic
- Large tank: 72 L
Cons
- Engine Toyota 2GR-FE/FKS (3.5 V6): rubber VVT-i oil line can burst on early engines (before ~2010)
- Aisin gearbox (Toyota/Lexus 4–8-speed automatic): jolts when shifting at high mileage
Engine (Toyota 2GR-FE/FKS (3.5 V6)): rupture of the rubber VVT-i oil line on early engines (before ~2010); water pump leak; valve cover gasket leaks.
Gearbox (Aisin (Toyota/Lexus 4–8-speed automatic)): shift shocks at high mileage; solenoid wear from old oil.
Which one to choose
- FX / QX70 S51 (FX / QX70) — if you care more about: power, torque, wheelbase, 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: FX / QX70 S51 (FX / QX70) or RX III (AL10)?
FX / QX70 S51 (FX / QX70): up to 307 hp, RX III (AL10): up to 277 hp.
What is the vehicle tax in Kazakhstan?
For 2026, for a car under 10 years old: FX / QX70 S51 (FX / QX70) — about 68 375 ₸, RX III (AL10) — about 68 375 ₸ (base engine). A 0.7 factor applies to cars aged 10–20 years and 0.5 to cars over 20.