Summary

• With 74 currently listed for sale near Denver, CO and an average price of $20,732.00, 28.4% 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.

• 100.0% of 2021 Kia 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 enjoyable driving dynamics, combining comfort with performance.

Why it stands out

The 2021 Kia K5 captures attention with its striking fastback design and sporty performance. It represents a significant upgrade from the previous Optima, boasting a fresh identity and a more exciting driving experience. The 1.6L turbo engine provides a commendable 180 horsepower, delivering a smooth and responsive ride that many drivers appreciate. Furthermore, the K5 shines in terms of features, offering a stylish interior with quality materials and advanced technology, including standard wireless Apple CarPlay and Android Auto. Buyers will find the K5 appealing due to its excellent fuel economy, rated at an EPA-estimated 27 mpg city and 37 mpg highway, paired with an extensive five-year/60,000-mile warranty that underscores its value proposition. However, while it offers an attractive package, some critics note that it doesn't drive as sportily as its looks suggest, which could hold it back against competitors. Overall, the K5 stands out for its blend of style, performance, and practicality.

Other model years to consider

• 2022 Kia K5

  • Average price: $20,665.00
  • Good/great deal percentage: 30.2%
  • User rating: 4.73 / 5
  • Total listings: 116

• 2023 Kia K5

  • Average price: $23,524.00
  • Good/great deal percentage: 32.8%
  • User rating: 4 / 5
  • Total listings: 116

• 2024 Kia K5

  • Average price: $26,239.00
  • Good/great deal percentage: 35.8%
  • User rating: 5 / 5
  • Total listings: 106

This analysis is based on CarGurus' proprietary market data from April 21, 2026, CarGurus experts' opinions, and generative AI.