How the 2025 Kia K5 and 2025 Nissan Altima compare on running costs, safety and reliability signals, using official NHTSA and EPA data plus asking prices from listings in Canada and the USA.
| 2025 Kia K5 | 2025 Nissan Altima | |
|---|---|---|
| Lemon Score0–100, higher is better | 45· Elevated lemon risk | 47· Elevated lemon risk |
| Fuel economy (best version) | 7.8 L/100 km30 mpg combined | 7.6 L/100 km31 mpg combined |
| City / highway | 26 / 37 mpg | 27 / 38 mpg |
| Annual fuel cost (EPA)US estimate, 15,000 mi/yr | $2,250 USD | $2,150 USD |
| NHTSA overall crash rating | 5 / 5 stars | 5 / 5 stars |
| Safety recalls | 2 | 2 |
| Owner complaints (NHTSA) | 52 | 7 |
| Most-reported problem area | tires | service brakes |
| Avg. asking price, Canada | — | — |
| Avg. asking price, USA | — | — |
Sources: U.S. EPA (fuel economy), NHTSA (crash ratings, recalls, complaints), listings on this site (prices). Recalls and complaints cover US-market vehicles; complaint counts are not adjusted for sales volume.