2021 Hyundai SONATA vs. 2021 Kia K5
iSeeCars' unbiased and data-driven comparison of the 2021 Hyundai SONATA and 2021 Kia K5 contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the 2021 Hyundai SONATA and the 2021 Kia K5.
When comparing the 2021 Hyundai SONATA's and the 2021 Kia K5's specifications and ratings, the 2021 Hyundai SONATA has the advantage in the areas of typical lower range of pricing for used cars, resale value and base engine power. The 2021 Kia K5 has the advantage in the area of interior volume. The 2021 Hyundai SONATA and 2021 Kia K5 have the same fuel efficiency. Based on this comparison of the 2021 Hyundai SONATA's and the 2021 Kia K5's specifications and ratings, the 2021 Hyundai SONATA is a better car than the 2021 Kia K5.
Pricing: A used 2021 Hyundai SONATA ranges from $16,298 to $26,000 while a used 2021 Kia K5 is priced between $17,608 to $27,990.
Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the 2021 Hyundai SONATA loses 41.4 percent of its value and the 2021 Kia K5 loses 42.2 percent of its value. This means the 2021 Hyundai SONATA retains 0.8 percentage points more of its value and has the advantage of higher resale value versus the 2021 Kia K5.
Engine Power and Fuel Efficiency Comparison: For engine performance, the 2021 Hyundai SONATA’s base engine makes 191 horsepower, and the 2021 Kia K5 base engine makes 180 horsepower. Both the SONATA and the K5 are rated to deliver an average of 31 miles per gallon, with highway ranges of 548 and 585 miles respectively. Both models use regular unleaded.
Passenger Space Comparison: While both models are midsize cars, the 2021 Kia K5 has the advantage of offering more interior volume, reflected in more front head room, front shoulder room and rear leg room. The 2021 Hyundai SONATA has the advantage in the areas of rear head room cargo space. The 2021 Hyundai SONATA and 2021 Kia K5 are comparable in regards to front leg room and rear shoulder room.
Safety Ratings: When comparing crash test ratings from NHTSA, both the 2021 Hyundai SONATA and the 2021 Kia K5 have the same average safety rating of 5 out of 5 Stars.
New Car Pricing
Asking Price:
-
Starting MSRP:
$23,950
Category Avg Starting MSRP:
(Midsize Cars)
$25,984
Category Starting MSRP Range:
(Midsize Cars)
$22,270 - $36,995
New Car Pricing
Asking Price:
-
Starting MSRP:
$23,590
Category Avg Starting MSRP:
(Midsize Cars)
$25,984
Category Starting MSRP Range:
(Midsize Cars)
$22,270 - $36,995
Used Car Pricing
Avg Used Car Price:
$20,935
Price Range:
$16,298 - $26,000
Category Avg Price:
(Midsize Cars)
$23,413
Category Avg Price Range:
(Midsize Cars)
$19,265 - $31,049
# Used Cars for Sale Nationally:
1,409
Avg Mileage of Used Cars for Sale:
40,701
# Good or Great Deals:
508
Used Car Pricing
Avg Used Car Price:
$22,775
Price Range:
$17,608 - $27,990
Category Avg Price:
(Midsize Cars)
$23,413
Category Avg Price Range:
(Midsize Cars)
$19,265 - $31,049
# Used Cars for Sale Nationally:
921
Avg Mileage of Used Cars for Sale:
51,016
# Good or Great Deals:
330
Hyundai SONATA Scores & Rankings
Overall Score:
8.6 / 10
Reliability:
7.9 / 10
Retained Value:
7.9 / 10
Safety:
10.0 / 10
Kia K5 Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
7.9 / 10
Safety:
10.0 / 10
iSeeCars Reliability Insights for 2021 Hyundai SONATA
Remaining Life Expectancy (years):
6.6
Typical Category Remaining Life Expectancy:
(Midsize Cars)
7.2
Category Remaining Life Expectancy Range:
(Midsize Cars)
6.5 - 10
Chance of Reaching 200k Miles for a New Car:
4.4%
iSeeCars Reliability Insights for 2021 Kia K5
Remaining Life Expectancy (years):
Typical Category Remaining Life Expectancy:
(Midsize Cars)
7.2
Category Remaining Life Expectancy Range:
(Midsize Cars)
6.5 - 10
Chance of Reaching 200k Miles for a New Car:
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
4.4
Typical Category Recalls:
(Midsize Cars)
4.4
Category Range for Recalls:
(Midsize Cars)
1.5 - 13.8
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
8.7
Typical Category Recalls:
(Midsize Cars)
4.4
Category Range for Recalls:
(Midsize Cars)
1.5 - 13.8
Hyundai SONATA Rankings
Ranking
2 out of / 13Ranking
2 out of / 13Ranking
3 out of / 13Ranking
4 out of / 13Ranking
4 out of / 6Ranking
5 out of / 13Ranking
5 out of / 13Ranking
5 out of / 6Ranking
6 out of / 13Ranking
6 out of / 9Ranking
7 out of / 13Ranking
8 out of / 13Ranking
13 out of / 13Kia K5 Rankings
Ranking
1 out of / 13Ranking
1 out of / 13Ranking
4 out of / 13Ranking
4 out of / 9Ranking
5 out of / 13Ranking
6 out of / 13Ranking
8 out of / 13Ranking
12 out of / 13Available Body Styles
Sedan
Available Body Styles
Sedan
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
2021 Hyundai SONATA Trim Levels
Limited, N Line, SE, SEL, SEL Plus
2021 Kia K5 Trim Levels
EX, GT, GT-Line, LX, LXS
Warranty Information
Warranty, Bumper-to-Bumper:
5 years / 60000 miles
Warranty, Powertrain:
10 years / 100000 miles
Warranty, Roadside Assistance:
5 years
Warranty Information
Warranty, Bumper-to-Bumper:
5 years / 60000 miles
Warranty, Powertrain:
10 years / 100000 miles
Warranty, Roadside Assistance:
5 years / 60000 miles
Safety Ratings
NHTSA Safety Rating (last 5 year average):
5 out of 5 Stars
2024 NHTSA Overall Rating:
5 out of 5 Stars
2024 NHTSA Front Crash Overall Rating:
4 out of 5 Stars
2024 NHTSA Side Crash Overall Rating:
5 out of 5 Stars
2024 NHTSA Rollover Rating:
5 out of 5 Stars
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
5 out of 5 Stars
2024 NHTSA Overall Rating:
4 out of 5 Stars
2024 NHTSA Front Crash Overall Rating:
4 out of 5 Stars
2024 NHTSA Side Crash Overall Rating:
5 out of 5 Stars
2024 NHTSA Rollover Rating:
4 out of 5 Stars
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
191 hp @ 6100 rpm
Torque:
181 foot-lbs @ 4000 rpm
Power-to-Weight Ratio (higher is better):
0.061 hp per pound
Base Drivetrain Specs
Horsepower:
180 hp @ 5500 rpm
Torque:
195 foot-lbs @ 1500 rpm
Power-to-Weight Ratio (higher is better):
0.058 hp per pound
Engine Specifications
Engine Size:
2.5 liters
Engine Configuration:
Inline
Number of Cylinders:
4
Transmission:
Automatic
Standard/Optional Drivetrain Type:
FWD
EPA Fuel Economy
(City/Highway/Combined MPG):
27 / 37 / 31
Range (city/hwy):
400 / 548 miles
Recommended Fuel Type:
Regular Unleaded
Engine Specifications
Engine Size:
1.6 liters
Engine Configuration:
Inline
Number of Cylinders:
4
Transmission:
Automatic
Standard/Optional Drivetrain Type:
FWD / AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
27 / 37 / 31
Range (city/hwy):
427 / 585 miles
Recommended Fuel Type:
Regular Unleaded
Standard/Optional Features
Adaptive Cruise Control:
Standard
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Voice Recognition:
Standard
Cooled/Ventilated Seats:
Available
Heated Seats
Available
Heated Steering Wheel:
Available
Keyless Ignition:
Available
Leather Upholstery:
Available
Navigation System:
Available
Paddle Shifters:
Available
Parking Sensors:
Available
Power Lift Gate:
Available
Satellite radio:
Available
Sunroof/Moonroof:
Available
Wireless Smartphone Charging:
Available
Air Suspension:
N/A
Automatic Parking:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Trailer Hitch:
N/A
Wifi:
N/A
Standard/Optional Features
Adaptive Cruise Control:
Available
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Internet Radio:
N/A
Keyless Entry:
Standard
Power outlet:
Standard
Roadside assistance:
Available
Voice Recognition:
Standard
Cooled/Ventilated Seats:
Available
Heated Seats
Available
Heated Steering Wheel:
Available
Keyless Ignition:
Available
Leather Upholstery:
Available
Navigation System:
Available
Paddle Shifters:
Available
Parking Sensors:
Available
Power Lift Gate:
Available
Satellite radio:
Available
Sunroof/Moonroof:
Available
Wireless Smartphone Charging:
Available
Air Suspension:
N/A
Automatic Parking:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Trailer Hitch:
N/A
Wifi:
N/A
Safety Features
Backup camera:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Lane Keeping Assist:
Standard
Pedestrian Detection:
Standard
Rear Seat Reminder:
Standard
360-Degree Camera:
Available
Blind Spot Monitoring:
Available
Rear Cross-Traffic Alert:
Available
Safety Features
Backup camera:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Lane Keeping Assist:
Standard
Pedestrian Detection:
Standard
Rear Seat Reminder:
Standard
360-Degree Camera:
Available
Blind Spot Monitoring:
Available
Rear Cross-Traffic Alert:
Available
Interior Dimensions
Front Head Room:
40 inches
Front Leg Room:
46.1 inches
Front Shoulder Room:
57.9 inches
Rear Head Room:
38.4 inches
Rear Leg Room:
34.8 inches
Rear Shoulder Room:
56.1 inches
Cargo Space:
16.3 cubic feet
Overall Interior Volume:
104.4 cubic feet
Interior Dimensions
Front Head Room:
40.2 inches
Front Leg Room:
46.1 inches
Front Shoulder Room:
58 inches
Rear Head Room:
37.8 inches
Rear Leg Room:
35.2 inches
Rear Shoulder Room:
56.1 inches
Cargo Space:
16 cubic feet
Overall Interior Volume:
105.3 cubic feet
Exterior Dimensions
Curb Weight:
3120 lbs
Width:
73.2 inches
Height:
56.9 inches
Length:
192.9 inches
Wheelbase:
111.8 inches
Ground Clearance:
5.3 inches
Exterior Dimensions
Curb Weight:
3115 lbs
Width:
73.2 inches
Height:
56.9 inches
Length:
193.1 inches
Wheelbase:
112.2 inches
Ground Clearance:
5.3 inches
Standard Wheel/Tire Information
Wheel Size:
16.0 x 6.5 inches
Wheel Type:
aluminum alloy
Tire Size:
P205/65R16
Standard Wheel/Tire Information
Wheel Size:
16.0 x 6.5 inches
Wheel Type:
painted aluminum alloy
Tire Size:
P205/65R16
Exterior Colors
Black
Phantom Black
Blue
Stormy Sea
Gray
Hampton Gray / Portofino Gray
Red
Calypso Red
Silver
Shimmering Silver Pearl
White
Quartz White
Exterior Colors
Black
Ebony Black
Blue
Not available
Gray
Not available
Red
Passion Red Tintcoat
Silver
Everlasting Silver
White
Glacial White Pearl
Interior Colors
Black
Black
Gray
Dark Gray
Interior Colors
Black
Black
Gray
Not available
