VS
At a Glance
Power
191hp @ 6100
191hp @ 6100
Torque
181lb-ft @ 4000
181lb-ft @ 4000
Fuel
33 mpg est.
32 mpg est.
Engine
2.5 L/152ci
2.5 L/152ci
Choosing between the Hyundai Sonata and the KIA K5 is one of the most common decisions car buyers in the United States face. The Hyundai Sonata delivers 191hp @ 6100 while the KIA K5 produces 191hp @ 6100. On fuel, the Sonata returns 33 mpg est. while the K5 uses 32 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $27,300 for the Sonata and $27,490 for the K5. Both vehicles have their merits. The right choice depends on your priorities: fuel economy, performance, towing ability, safety features or total cost of ownership. This comparison covers every specification available so you can make an informed decision.
Performance
Power Output (hp)
191hp @ 6100
191hp @ 6100
Torque (lb-ft)
181lb-ft @ 4000
181lb-ft @ 4000
Engine & Drivetrain
Engine Capacity
2.5 L/152ci
2.5 L/152ci
Cylinders
4
4
Fuel Type
Gasoline
Gasoline
Transmission
Automatic
Automatic
Number of Gears
8
8
Drive Wheels
Front Wheel Drive
Front Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
33 mpg est.
32 mpg est.
Fuel Economy - City (mpg)
28 (2025)mpg
26mpg
Fuel Economy - Highway (mpg)
38 (2025)mpg
37mpg
Fuel Tank Capacity (gal)
15.9gal
15.8gal
Dimensions
Length (in)
193.3in
193.1in
Width (in)
73.2in
73.2in
Height (in)
56.9in
56.9in
Wheelbase (in)
111.8in
112.2in
Curb Weight (lbs)
3232lbs
3230lbs
Safety
ABS
✓ Standard
✓ Standard
Brake Assist
✓ Standard
✓ Standard
Stability Control
✓ Standard
✓ Standard
Traction Control
✓ Standard
✓ Standard
Driver Airbag
✓ Standard
✓ Standard
Passenger Airbag
✓ Standard
✓ Standard
Side Airbags Front
✓ Standard
✓ Standard
Curtain Airbags
✓ Standard
✓ Standard
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
—
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
✓ Standard
Bluetooth
✓ Standard
✓ Standard
Backup Camera
✓ Standard
✓ Standard
Rear Parking Aid
—
✓ Standard
Keyless Entry
✓ Standard
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
Hyundai Sonata
1 / 4 categories
Performance
Tied
Fuel Economy
Sonata
Value
Tied
Practicality
Tied
Pros & Cons
Hyundai Sonata
Better fuel economy (33 mpg est.)
Lower starting price ($27,300)
Few notable weaknesses
KIA K5
Well-rounded specification
Higher fuel consumption (32 mpg est.)
Higher starting price
Frequently Asked Questions
Which is more fuel efficient, the Sonata or K5?
The Sonata gets 33 mpg est. and the K5 gets 32 mpg est. on the combined cycle. The Sonata is the more fuel-efficient choice. In real-world conditions with a mix of highway and urban driving, actual figures will be slightly higher.
Which has more power, the Sonata or K5?
The Sonata produces 191hp @ 6100 and 181lb-ft @ 4000 of torque while the K5 delivers 191hp @ 6100 and 181lb-ft @ 4000 of torque. They produce closely matched power outputs.
What is the price difference between the Sonata and K5?
The Sonata starts from $27,300 and the K5 from $27,490, a difference of just $190, which is negligible. At this price point the two are essentially tied on starting price. Final on-the-road pricing varies by dealer and specification.
Should I buy the Sonata or the K5?
It depends on your priorities. If fuel economy matters most, check the mpg figures above. If you need towing capacity, compare the towing ratings. For day-to-day driving - commutes, school runs and highway trips - consider ground clearance, service network coverage, and total cost of ownership including insurance and maintenance. Use the spec tables above to compare every detail before making your decision.
Also Consider