Fuel consumption: 14 of 14 variants rated.
Kia K4 1.6 T-GDi MHEV GT-PlusLine tops the Kia K4 ranking by Fuel consumption, at 6.8 l/100km (41.5 mpg UK · 34.6 mpg US).
Across 14 ranked variants, Fuel consumption spans from 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) to 6.8 l/100km (41.5 mpg UK · 34.6 mpg US).
| # | Variant | Year | Body | Fuel | Fuel consumption |
|---|---|---|---|---|---|
| 1 | Kia K4 1.6 T-GDi MHEV GT-PlusLine | 2026 | Hatchback | Petrol | 6.8 l/100km (41.5 mpg UK · 34.6 mpg US) |
| 2 | Kia K4 Sportswagon 1.6 T-GDi MHEV GT-PlusLine | 2026 | Wagon | Petrol | 6.8 l/100km (41.5 mpg UK · 34.6 mpg US) |
| 3 | Kia K4 1.6 T-GDi MHEV GT-Line Launch Edition | 2026 | Hatchback | Petrol | 6.6 l/100km (42.8 mpg UK · 35.6 mpg US) |
| 4 | Kia K4 Sportswagon 1.6 T-GDi MHEV GT-Line Launch Edition | 2026 | Wagon | Petrol | 6.6 l/100km (42.8 mpg UK · 35.6 mpg US) |
| 5 | Kia K4 1.0 T-GDi MHEV Air+1 | 2026 | Hatchback | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 6 | Kia K4 1.0 T-GDi MHEV Plus+1 | 2026 | Hatchback | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 7 | Kia K4 1.0 T-GDi MHEV GT-Line Launch Edition | 2026 | Hatchback | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 8 | Kia K4 1.0 T-GDi MHEV GT-Line | 2026 | Hatchback | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 9 | Kia K4 1.0 T-GDi MHEV GT-PlusLine | 2026 | Hatchback | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 10 | Kia K4 Sportswagon 1.0 T-GDi MHEV Air+1 | 2026 | Wagon | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 11 | Kia K4 Sportswagon 1.0 T-GDi MHEV Plus+1 | 2026 | Wagon | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 12 | Kia K4 Sportswagon 1.0 T-GDi MHEV GT-Line Launch Edition | 2026 | Wagon | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 13 | Kia K4 Sportswagon 1.0 T-GDi MHEV GT-Line | 2026 | Wagon | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |
| 14 | Kia K4 Sportswagon 1.0 T-GDi MHEV GT-PlusLine | 2026 | Wagon | Petrol | 5.6 l/100km (50.4 mpg UK · 42.0 mpg US) |