2021 Mazda6 vs 2021 Kia K5 

2021 Mazda6 vs 2021 Kia K5

Rumors of the Optima’s death were greatly exaggerated. The new Kia K5 arrives on the scene as a revamped version of the retired Optima name, but a fresh look and new badging do not a winner make. Discover how the new Kia K5 compares to the Mazda6 sedan when we balance these age-old rivals once again.

Our comparison offers a quick look into some of the most critical factors drivers consider when shopping between the 2021 Mazda6 and the new 2021 Kia K5. Let’s dive in:



2021 Kia K5

$24,475 Starting MSRP $23,590
SKYACTIV®-G 2.5L Engine Baseline Engine 1.6L Turbo I-4 Engine
38.7 inches Rearseat Legroom 35.2 inches
Standard Radar Cruise Control with Stop-and-Go Available

Advantages of the 2021 Mazda6 Sedan 

Our comparison shows that the 2021 Mazda6 might just offer a more competitive package over the rivaling 2021 Kia K5. A closer look at the Mazda car’s advantages only confirms our suspicions.

Among its most prominent advantages, the Mazda6 balances high levels of engagement with a family-friendly ride quality. The car’s steering is arguably the best in its class, offering just the right amount of assistance to glide through corners. The car’s G-Vectoring Control Plus system works non-stop, making subtle adjustments to engine power and braking in order to provide a smoother ride than rivaling sedans. The system can even help during sudden lane changes and other evasive moves.

All Mazda6 sedans come loaded with a full i-ACTIVSENSE® suite of safety features that includes Advanced Smart City Brake Support with Pedestrian Detection, Smart Brake Support with Collision Warning, Lane Departure Warning with Lane-Keep Assist, Blind Spot Monitoring with Rear Cross-Traffic Alert, Automatic High Beams, and a Mazda Radar Cruise Control with Stop-and-Go. You won’t find that same range of driver assists standard on any K5.

Interested in the 2021 Mazda6? Drivers in the Memphis area can reach out to their local team of experts at Gwatney Mazda of Germantown for more model information and highlights.

Adjust Payment Terms ×

We want to help you find the perfect car that fits your budget. Please adjust the options below so we can estimate the most accurate monthly payments.

Estimated Credit Score or Interest Rate

Desired Loan Term (months)

How much will you put down?

All tax, title and vehicle registration fees are additional. See dealer for complete details.