2021 Kia K4

For almost any modern vehicle category, there’s a Kia that’s worth considering buying. Among competitive small and midsized sedans, Kia sells the K4 and K5. For small and midsized SUVs, models like the Sportage and Sorento are competitive with nice interiors, good ride comfort, and appropriately powerful engines. Fuel economy across the brand is generally good, but hybrid and plug-in hybrid options are available for even more miles per gallon. Plug-in hybrid options have a useful all-electric driving range. Kia EVs are generally competent, but buyers need to be attentive to reliability. Many new and used Kias earn our recommendation.

Market value: $24,000
Fuel: Conventional
Transmission: Automatic
Seats: 5

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Model year 2021

Owner rating Not rated

Reliability Not rated

Data updated June 4, 2026

At a glance

Model data

Overview

Powertrain: Conventional
Body style: sedan
Drive type: AWD
Transmission: Automatic, 8-speed
Category: Midsized cars
Generation began: 2021

Pricing

Original MSRP range: $24,000 - $38,000

Road tests

Test status: Not Tested

Dimensions

Length: 193 in
Width: 73 in
Height: 57 in
Wheelbase: 112 in

Interior

Seating: 5 people

Brand context

About Kia

For almost any modern vehicle category, there’s a Kia that’s worth considering buying. Among competitive small and midsized sedans, Kia sells the K4 and K5. For small and midsized SUVs, models like the Sportage and Sorento are competitive with nice interiors, good ride comfort, and appropriately powerful engines. Fuel economy across the brand is generally good, but hybrid and plug-in hybrid options are available for even more miles per gallon. Plug-in hybrid options have a useful all-electric driving range. Kia EVs are generally competent, but buyers need to be attentive to reliability. Many new and used Kias earn our recommendation.

Vehicle ID: 19824 First published: December 4, 2025 Updated: June 4, 2026

Values may vary by trim, options, location, and market conditions.