If fuel cost matters most
Hyundai Sonata with up to 32 MPG combined.
Side-by-side verified model comparison
Hyundai Sonata vs Kia K5
Hyundai Sonata and Kia K5 answer the same shopping question from different directions. The Sonata is more efficient on verified EPA data, while the K5 reaches the higher power peak. Use the table below to decide whether your priority is fuel cost, safety, size or outright output.
At a glance
| Metric | Hyundai Sonata | Kia K5 |
|---|---|---|
| Production coverage | 1985 - present | 2020 - present |
| Verified generations | 2 | 1 |
| Peak power | 290 hp | 290 hp |
| Best EPA combined | 32 MPG | 31 MPG |
| Latest NHTSA overall | 5★ | 5★ |
| Open recalls (2020/2020) | 4 | 0 |
| Latest dimensions | 4900 × 1859 × 1445 mm | 4905 × 1859 × 1445 mm |
| Average curb weight | 1543 kg (3402 lbs) | 1557 kg (3433 lbs) |
| Fuel types | Petrol | Petrol |
If power matters most
They are effectively tied on this metric; use the table and generation links for context.
If safety is the filter
They are effectively tied on this metric; use the table and generation links for context.
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Head-to-Head: Base Model Specifications
A detailed side-by-side comparison of the entry-level powertrain for the newest verified generation of each model. This shows exactly what you get before adding options or stepping up to premium trims.
| Specification | Hyundai SonataSonata VIII 2.5 GDI | Kia K5K5 DL3 1.6 T-GDI |
|---|---|---|
| Engine & Performance | ||
| Engine Type | Petrol | Petrol |
| Cylinders / Configuration | I4 | I4 |
| Displacement | 2.5L (2497 cc) | 1.6L (1598 cc) |
| Aspiration | Naturally aspirated | Turbocharged |
| Horsepower | 191 hp | 180 hp |
| Torque | 246 Nm | 265 Nm |
| 0-100 km/h (0-62 mph) | 8.1 s | 8.0 s |
| Top Speed | 210 km/h | 210 km/h |
| Transmission & Drivetrain | ||
| Transmission | Automatic | Automatic |
| Gears | 8 | 8 |
| Drivetrain | FWD | FWD |
| Fuel Economy & Range | ||
| City MPG (EPA) | 28.0 MPG | 27.0 MPG |
| Highway MPG (EPA) | 38.0 MPG | 37.0 MPG |
| Combined MPG (EPA) | 32.0 MPG | 31.0 MPG |
| Electric Range | — | — |
| Battery Capacity | — | — |
| CO₂ Emissions | 155 g/km | 155 g/km |
| Dimensions & Utility | ||
| Length | 4900 mm | 4905 mm |
| Width | 1859 mm | 1859 mm |
| Height | 1445 mm | 1445 mm |
| Wheelbase | 2840 mm | 2850 mm |
| Curb Weight | 1470 kg | 1475 kg |
| Doors / Seats | 4 / 5 | 4 / 5 |
What search winners do that generic comparisons don’t
The top-ranking comparison pages win because they answer an explicit buying job: which one is more efficient, which one is safer, which one is larger, which one has the broader powertrain range. Pages that only dump two brochures side by side rarely hold clicks.
This comparison uses the newest verified generation of each model as the headline lens, then routes you into the exact generation sheets for the trim-level details. That is more durable than comparing incentives or dealer inventory, and more trustworthy than hiding missing data behind a made-up score.
Questions buyers ask
Which is more fuel-efficient, the Sonata or the K5?
Hyundai Sonata wins on verified EPA combined economy at up to 32 MPG, versus 31 MPG for the Kia K5.
Which has more horsepower, the Sonata or the K5?
They match at a verified peak of 290 hp.
Which is safer: Sonata or K5?
Hyundai Sonata has a latest recorded NHTSA overall rating of 5★; Kia K5 has 5★. Cross-check the frontal, side and rollover rows rather than using one headline number alone.
Is this a trim-by-trim comparison?
This page compares the newest verified generation of each model family. For year-specific engines, dimensions and trim tables, open the linked generation pages for each side.