Summary

• With 1,583 currently listed for sale and an average price of $19,152.00, 32.2% of 2021 Kia K5s for sale on CarGurus are rated as good or great deals.

• Favorably reviewed: Owners rated the 2021 Kia K5 4.7 / 5 stars.

• 70.8% of 2021 K5 models on CarGurus are accident free.

• The 2021 Kia K5 is an all-new sedan that replaces the Optima with a stylish design and improved driving dynamics, featuring a 1.6-liter turbo engine offering 180 horsepower.

Why it stands out

The 2021 Kia K5 is a standout in the midsize sedan market due to its stylish design, which feels fresh and modern compared to its predecessor, the Optima. As an all-new model, it features aggressive styling akin to the sporty Kia Stinger, highlighted by unique design elements such as its distinctive rear lights and a sleek fastback silhouette. The K5 offers a comfortable and well-equipped interior that includes advanced tech features like standard wireless Apple CarPlay and Android Auto. Owners appreciate its smooth driving experience and fuel efficiency, with an EPA-estimated 27 mpg city and 37 mpg highway for front-wheel-drive versions. However, it's worth noting that despite its sporty appearance, the K5's handling may not match the performance level suggested by its design, as some drivers report a lack of sportiness in its driving dynamics. Overall, the K5 combines good looks with practicality and excellent value, making it a compelling choice for sedan shoppers.

Other model years to consider

• 2022 Kia K5

  • Average price: $21,123.00
  • Good/great deal percentage: 31.1%
  • User rating: 4.73 / 5
  • Total listings: 2,599

• 2024 Kia K5

  • Average price: $25,834.00
  • Good/great deal percentage: 29.5%
  • User rating: 5 / 5
  • Total listings: 3,264

• 2025 Kia K5

  • Average price: $25,361.00
  • Good/great deal percentage: 29.7%
  • User rating: 5 / 5
  • Total listings: 2,461

This analysis is based on CarGurus' proprietary market data from April 27, 2026, CarGurus experts' opinions, and generative AI.