Sonata VII (LF) vs Optima IV (JF): which is better?
Hyundai Sonata VII (LF) (2014–2019) vs Kia Optima IV (JF) (2015–2020): specs, fuel economy, tax and common problems.
Specifications
| Hyundai Sonata VII (LF) | Kia Optima IV (JF) | |
|---|---|---|
| Production years | 2014–2019 | 2015–2020 |
| Body | sedan | sedan |
| Fuel | petrol | petrol |
| Engines | 2.4 | 2.4 |
| Power, up to | 188 hp | 188 hp |
| Torque, up to | 241 Nm | 241 Nm |
| Gearbox | automatic | automatic |
| Drive | front-wheel drive | front-wheel drive |
| Length | 4 855 mm | 4 855 mm |
| Width | 1 865 mm | 1 860 mm |
| Height | 1 475 mm | 1 465 mm |
| Wheelbase | 2 805 mm | 2 805 mm |
| Ground clearance | — | 155 mm |
| Fuel tank | 70 L | 70 L |
| KZ tax 2026 (car under 10 years) | ≈ 28 750 ₸ | ≈ 28 750 ₸ |
The better value is highlighted in green.
Pros, cons and common problems
Hyundai Sonata VII (LF)
Pros
- Powerful versions: up to 188 hp
- Conventional automatic, no robotized gearbox or CVT
- Large tank: 70 L
- Sold in all major markets of the region — parts and mechanics available
Cons
- Hyundai/Kia Theta II engine (G4KD, G4KE, G4KJ): cylinder scoring (especially the direct-injection G4KJ)
- Hyundai/Kia automatic: jolts on 2–3 shifts and when braking
Engine (Hyundai/Kia Theta II (G4KD, G4KE, G4KJ)): cylinder scoring (especially the direct-injection G4KJ); knocking and oil consumption; catalytic converter debris in the cylinders.
Gearbox (Hyundai/Kia automatic): kicks on the 2–3 shift and when braking; solenoid and clutch pack wear at high mileage.
Kia Optima IV (JF)
Pros
- Powerful versions: up to 188 hp
- Conventional automatic, no robotized gearbox or CVT
- Large tank: 70 L
- Sold in all major markets of the region — parts and mechanics available
Cons
- Hyundai/Kia Theta II engine (G4KD, G4KE, G4KJ): cylinder scoring (especially the direct-injection G4KJ)
- Hyundai/Kia automatic: jolts on 2–3 shifts and when braking
Engine (Hyundai/Kia Theta II (G4KD, G4KE, G4KJ)): cylinder scoring (especially the direct-injection G4KJ); knocking and oil consumption; catalytic converter debris in the cylinders.
Gearbox (Hyundai/Kia automatic): kicks on the 2–3 shift and when braking; solenoid and clutch pack wear at high mileage.
FAQ
Which is more powerful: Sonata VII (LF) or Optima IV (JF)?
Sonata VII (LF): up to 188 hp, Optima IV (JF): up to 188 hp.
What is the vehicle tax in Kazakhstan?
For 2026, for a car under 10 years old: Sonata VII (LF) — about 28 750 ₸, Optima IV (JF) — about 28 750 ₸ (base engine). A 0.7 factor applies to cars aged 10–20 years and 0.5 to cars over 20.