What are the Differences Between the Kia K5 and the Kia Optima?

2021 Kia K5 vs 2020 Kia Optima

The 2021 Kia K5 midsize sedan model will be arriving later this summer. At that time, it will replace the 2020 Kia Optima in the North American Kia catalog. So, what are the differences between this new generation of the Kia midsize sedan model? It’s the 2021 Kia K5 vs the 2020 Kia Optima! 


2021 Kia K5 – Color Options


Kia K5 vs Kia Optima – All-Wheel Drive

The 2021 Kia K5 comes with available all-wheel drive. This feature will debut in late 2020 on trim levels with the baseline 1.6L turbocharged inline 4 engine. 

The 2020 Kia Optima does not have available all-wheel drive. 

Kia K5 vs Kia Optima – Dimensions

2021 Kia K5

2020 Kia Optima

Length: 193.1” 

Length: 191.1” 

Width: 73.2” 

Width: 73.2” 

Height: 56.9” 

Height: 57.7” 

Wheelbase: 112.2” 

Wheelbase: 110.4” 

Kia K5 vs Kia Optima – Engine Specs and Power

The 2021 Kia K5 baseline engine option is a 1.6L turbocharged inline 4 engine that produces 180 horsepower and 195 lb-ft of torque

The 2021 Kia K5 upgraded engine option is a 2.5L turbocharged inline 4 engine that produces 290 horsepower and 311 lb-ft of torque

The 2020 Kia Optima baseline engine option is a 2.4L inline 4 engine that produces 185 horsepower and 178 lb-ft of torque

The 2020 Kia Optima upgraded engine option is a 1.6L turbocharged inline 4 engine that produces 178 horsepower and 195 lb-ft of torque

Kia K5 vs Kia Optima – Transmission

The 2021 Kia K5 standard transmission is an 8-speed shiftable automatic transmission

The 2021 Kia K5 upgraded transmission is an 8-speed dual-clutch automated manual transmission

The 2020 Kia Optima standard transmission is a 6-speed shiftable automatic transmission

The 2020 Kia Optima upgraded transmission is a 7-speed dual-clutch automated manual transmission.


View Our New Kia Inventory


Test Drive the 2021 Kia K5 Sedan in Kenosha, WI

Once we get the 2021 Kia K5 in stock here at Palmen Kia, we’d love to have you in for a test drive. Browse through our online inventory and contact us to learn more! 

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  • I just bought a 2015 kia optima in
    Palmdale ca .2 months later the engine started knocking ,like a rod.So now I'm without a car ,But still got the car payment ,of$ 15.000 bucks .

  • Hey everyone! Did you know that the 2010 and 2015 Kia Optimas were both called K5 in Korea and for Korea, this one is the third K5? And in Korea, Cadenza is K7 and Cerato is K3, and we all know the K9. Kia Picanto is Morning, and the Stinger is otherwise known as K8 in Korea

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