2026 Kia K5 LXS vs 2025 Hyundai Sonata SE
On paper, the 2025 Hyundai Sonata SE wins on $590 less, 2 MPG better. The 2026 Kia K5 LXS has to win you at the dealer. Key numbers: 191 vs 191 hp, 30 vs 32 MPG.
The Sonata SE leads on $590 less, 2 MPG better. The spec table compares 1 specification head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 1 specifications.
Full Specification Comparison
Specifications and pricing reflect available data as of early 2026 and may not match current manufacturer figures. Always confirm details with an authorized dealer before making a purchase decision.
| Spec | 2026 Kia K5 LXS | 2025 Hyundai Sonata SE |
|---|---|---|
| Pricing | ||
| MSRP | $27,490 | $26,900 |
| Powertrain | ||
| Engine | 2.5L I4 | 2.5L I4 |
| Horsepower | 191 hp | 191 hp |
| Torque | 181 lb-ft | 181 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | FWD | FWD |
| Fuel Economy | ||
| City MPG | 26 | 28 |
| Highway MPG | 37 | 38 |
| Combined MPG | 30 | 32 |
| Fuel Tank | 15.8 gal | No published data |
| Annual Fuel Cost (EPA) | $1,450/yr | No published data |
| Dimensions | ||
| Curb Weight | 3,230 lbs | No published data |
| Wheelbase | 112.2" | 111.8" |
| Length | 193.1" | 193.3" |
| Width | 73.2" | 73.2" |
| Height | 56.9" | 56.9" |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 stars |
| IIHS Award | No published data | TSP+ |
| Warranty | ||
| Bumper-to-Bumper | 5yr/60k | 5yr/60k |
| Powertrain | 10yr/100k | 10yr/100k |
| Corrosion | 5yr/100k | 7yr/unlimited |
| Roadside Assistance | 5yr/60k | 5yr/unlimited |
Frequently Asked Questions
What is the price difference between the 2026 Kia K5 LXS and 2025 Hyundai Sonata SE?
The 2025 Hyundai Sonata SE starts at $26,900, $590 less than the 2026 Kia K5 LXS at $27,490. On a 60-month loan that is roughly $10/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2026 Kia K5 LXS?
The 2026 Kia K5 LXS is the stronger pick when you prefer the Kia approach to the midsize sedan segment.
Who should choose the 2025 Hyundai Sonata SE?
The 2025 Hyundai Sonata SE is the stronger pick when you want to keep $590 in your pocket and the 2025 Hyundai Sonata SE covers your needs; lower running costs matter to you, roughly $88/year less on fuel.
Which gets better fuel economy, the 2026 Kia K5 LXS or 2025 Hyundai Sonata SE?
The 2025 Hyundai Sonata SE rates 32 combined MPG, 2 MPG ahead.
Which is more powerful, the 2026 Kia K5 LXS or 2025 Hyundai Sonata SE?
Both produce 191 hp.
Is the 2026 Kia K5 LXS bigger than the 2025 Hyundai Sonata SE?
The 2025 Hyundai Sonata SE is 0.2″ longer at 193.3″ vs 193.1″. The 2026 Kia K5 LXS has a 0.4″ longer wheelbase, which typically means more rear-seat legroom.
How do the warranties compare?
Both offer similar warranty coverage: 5yr/60k bumper-to-bumper and 10yr/100k powertrain.
Explore more: Kia trims, Kia K5 trims, Hyundai trims, Hyundai Sonata trims
- 2026 Kia K5 LXS Safety Ratings (NHTSA)
- 2025 Hyundai Sonata SE Safety Ratings (NHTSA)
- Compare Fuel Economy (EPA)
The K5–Sonata Decision
Shopping midsize sedans means the K5 and Sonata will likely end up on the same test-drive day. Here is what the numbers say before you get behind the wheel. The $-590 gap is about $10/month on a 60-month loan. Noticeable but not dramatic enough to be the deciding factor on its own.
What Powers Each Vehicle
Both run the same 2.5L I4 engine. Both produce 191 hp. Both use FWD.
The Ownership Math
The 2025 Hyundai Sonata SE saves roughly $88/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $440.
The Decision
Choose the 2026 Kia K5 LXS when you prefer the Kia approach to the midsize sedan segment. Choose the 2025 Hyundai Sonata SE when you want to keep $590 in your pocket and the 2025 Hyundai Sonata SE covers your needs.
Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with Kia or Hyundai or any dealership.