Head to head
2026 Hyundai Sonata vs Kia K5
The sourced numbers side by side, no verdict attached. Each column shows the 2026 lineup's representative trim, the one with the median EPA combined MPG.
At a glance
Hyundai Sonata
Shown: 2026 Sonata FWD Auto (S8), 4 cyl, 2.5 L, the median MPG trim of 6 2026 trims.
- NHTSA records, 2026 model year
- none on file
Kia K5
Shown: 2026 K5 AWD Auto (S8), 4 cyl, 2.5 L, the median MPG trim of 3 2026 trims.
- NHTSA records, 2026 model year
- none on file
Spec by spec
| Spec | 2026 Hyundai Sonata FWD Auto (S8), 4 cyl, 2.5 L | 2026 Kia K5 AWD Auto (S8), 4 cyl, 2.5 L |
|---|---|---|
| Make | Hyundai | Kia |
| Model | Sonata FWD | K5 AWD |
| Drivetrain | Front-Wheel Drive | All-Wheel Drive |
| MPG Hwy | 36 mpg | 33 mpg |
| MPG City | 25 mpg | 24 mpg |
| MPG Comb | 29 mpg | 27 mpg |
| Fuel $/yr | $2,050 | $2,200 |
| Eco Score | 6/10 | 5/10 |
| CO₂ | 310 g/mi | 329 g/mi |
| Pass. Vol | 104 ft³ | 105 ft³ |
How this page picks its numbers
Both columns share the newest model year the Hyundai Sonata and the Kia K5 both offer, 2026. Each column shows the 2026 lineup's representative trim, the one with the median EPA combined MPG. Fuel economy figures come from EPA records; recall, complaint, and crash rating figures come from NHTSA. Other trims differ, so open the comparison tool above to swap in the exact trims you are cross-shopping.