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2025 Kia K4 Brings Tech and Efficiency

by Ryan JamesOctober 4, 2025
No interest in electric? The Kia K4 combines bold design and up to 40 mpg highway fuel economy with a pair of gas powertrain choices, no electrification required.
Kia K4 rear view.

The all-new 2025 Kia K4 offers buyers a fresh choice that blends excellent fuel economy, modern technology, and a roomy interior. With its bold design and feature-rich trims, the K4 is positioned to appeal to those who want to address lower carbon emissions while driving more than just the basics in their daily commute.

Beyond efficiency, the Kia K4 is notable for introducing segment-above digital displays, advanced driver assistance, and premium interior features that are often reserved for midsize sedans. Its combination of everyday usability and upscale amenities sets it apart from rival models in the segment.

Kia K4 Size and Style

Kia K4 cabin.

At 185.4 inches long and 72.8 inches wide, the K4 is one of the largest models in its class, offering rear passengers 38 inches of legroom and 37.3 inches of headroom. The design emphasizes a sleek, fastback profile with hidden rear door handles and a wide stance, giving it a sporty edge. GT-Line trims are distinguished with gloss black accents, satin chrome trim, cube LED projection headlights, and 18-inch alloy wheels.

Inside, the K4 makes a strong impression with its wide digital command center. Nearly 30 inches of combined display space blends driver instrumentation and infotainment under Kia’s Connected Car Navigation Cockpit system. Wireless Apple CarPlay and Android Auto are standard across all trims. Premium options such as Harman Kardon audio, ventilated front seats, a panoramic sunroof, and Kia’s Digital Key 2.0 enhance its upscale feel. Voice interaction through Kia Assistant adds an extra layer of control.

Powertrains and Efficiency

Kia K4 engine.

The K4 comes with two front-wheel-drive powertrain choices. The standard 2.0-liter engine produces 147 horsepower and 132 lb-ft torque, delivering power to the road via an intelligently variable transmission. For those seeking more power, the optional 1.6-liter turbocharged engine delivers 190 horsepower and 195 lb-ft torque through an 8-speed automatic.

Fuel economy comes as a matter of course, with the 2.0-liter K4 earning EPA estimates of 40 mpg on the highway 30 mpg in the city, and 34 mpg combined. This places it among the most efficient choices in the compact sedan segment, aligning with competitors like the Honda Civic and Toyota Corolla. The turbocharged version trades some efficiency for performance but retains a practical balance for everyday driving.

Kia K4 Driving Dynamics

Kia K4 rear detail.

The K4’s GT-Line Turbo trim gains a multi-link rear suspension that enhances responsiveness and control, distinguishing it from base models with sharper handling. Across the lineup, engineers targeted noise, vibration, and harshness with acoustic glass and specialized tires, contributing to a more refined driving experience.

Safety tech is comprehensive, with all models featuring Kia’s advanced ADAS driver assistance systems. Standard equipment includes intelligent speed limit assist, lane-keeping assist, and adaptive cruise control with stop-and-go functionality. Higher trims offer upgraded collision avoidance with pedestrian and cyclist detection, blind-spot view monitoring, evasive steering assist, and surround-view cameras, broadening driver confidence in varied traffic and road conditions.

Trims and Market Position

Kia K4 rear seat.

Available in LX, LXS, EX, GT-Line, and GT-Line Turbo trims, the Kia K4 has carved out a presence in the compact sedan market. Its combination of welcome fuel efficiency, advanced digital features, and roomy proportions make it a strong competitor that will likely appeal to those seeking both daily practicality and a higher level of in-car tech.

Among its strengths is an easy entry for the K4 LX at $21,990, topping out at $25,990 for the higher performance GT-Line. For buyers wanting a sedan that balances style, technology, and real-world economy in an appealing package, the Kia K4 presents as a model deserving of real consideration.

Kia K4 display.