The 2026 Kia K4 is Kia's fourth-generation compact sedan, built to deliver more technology and interior room than the class usually offers. Most trims run a standard 2.0L engine, while the GT-Line Turbo adds an available 190-horsepower turbocharged version, and the cabin backs it up with one of the roomiest back seats in the segment and an available dual-screen digital cockpit.
Five trims take buyers from an efficient daily commuter up to a sport-tuned turbo model. The result reads as a larger, pricier car than its starting point suggests.
The 2026 K4 carries over from its 2025 redesign with a handful of comfort upgrades. SynTex seating is now standard on the EX and GT-Line, and the EX adds heated front seats and a rear folding armrest.
On the options side, the GT-Line Premium Package brings a 12.3-inch digital cluster with Kia's Connected Car Navigation Cockpit (ccNC), the Premium and Technology packages add a heated steering wheel, and a Red Interior Package is now offered with the GT-Line Sunroof Package.
The 2026 K4 comes in 5 trims: LX, LXS, EX, GT-Line, and GT-Line Turbo. Each step adds comfort, technology, or performance, so the ladder runs from a well-equipped commuter to a sport-tuned turbo.
The LX opens the lineup with the 2.0L engine, 16-inch wheels, a standard 12.3-inch touchscreen, and wireless Apple CarPlay and Android Auto. The LXS adds 16-inch alloys, Drive Mode Select, and a set of collision-avoidance systems. The EX is where the K4 starts to feel premium, with 17-inch alloys, SynTex seating, standard heated front seats, dual-zone automatic climate control, and wireless charging. The GT-Line shifts toward sport with 18-inch alloys, a multi-link rear suspension, a three-spoke steering wheel, and paddle shifters. The GT-Line Turbo tops the range, swapping in the 190-horsepower turbocharged engine, an 8-speed automatic, and access to the Technology Package.
| Trim | Engine | Transmission | Notable additions | Starting MSRP |
|---|---|---|---|---|
| LX | 2.0L I-4 | IVT | 16-in wheels, 12.3-in touchscreen, wireless CarPlay/Android Auto | Low-$20Ks |
| LXS | 2.0L I-4 | IVT | 16-in alloys, Drive Mode Select, blind-spot and rear cross-traffic assist | Low-$20Ks |
| EX | 2.0L I-4 | IVT | 17-in alloys, SynTex seats, heated front seats, dual-zone climate, wireless charging | Mid-$20Ks |
| GT-Line | 2.0L I-4 | IVT | 18-in alloys, multi-link rear suspension, paddle shifters, available Premium Package | Mid-$20Ks |
| GT-Line Turbo | 1.6L Turbo I-4 | 8-speed automatic | 190 hp, available Technology Package | High-$20Ks |
Pricing excludes destination, taxes, and fees and is subject to change. For current pricing on a specific configuration, contact Mike Kelly Kia.
The 2026 K4 offers 2 powertrains, one tuned for efficiency and one for performance. The standard 2.0L engine produces 147 horsepower and 132 lb-ft of torque through an Intelligent Variable Transmission, powering the LX, LXS, EX, and GT-Line.
The GT-Line Turbo steps up to a 1.6L turbocharged engine making 190 horsepower and 195 lb-ft of torque, paired with an 8-speed automatic. Both engines drive the front wheels. The GT-Line and GT-Line Turbo also receive an exclusive multi-link rear suspension and paddle shifters for a sportier feel.
| Spec | 2.0L (standard) | 1.6L Turbo (GT-Line Turbo) |
|---|---|---|
| Horsepower | 147 hp | 190 hp |
| Torque | 132 lb-ft | 195 lb-ft |
| Transmission | Intelligent Variable Transmission | 8-speed automatic |
| Drivetrain | Front-wheel drive | Front-wheel drive |
On fuel economy, the K4 holds its own in the segment.
| Engine | City | Highway | Combined |
|---|---|---|---|
| 2.0L | 29 | 39 | 33 |
| 1.6L Turbo | 26 | 33 | 28 |
EPA-estimated MPG. Actual mileage varies with driving conditions.
Technology is where the K4 separates itself from the compact-sedan norm. Every trim comes standard with a 12.3-inch touchscreen running Kia's ccNC software, plus wireless Apple CarPlay and Android Auto. Moving up the range unlocks a second 12.3-inch screen for the driver, and together with the cockpit's climate display the setup spans nearly 30 inches of combined digital display.
Available features push further upmarket: navigation, the Kia AI voice assistant for "Hey Kia" control, an 8-speaker Harman Kardon audio system, and Digital Key 2.0 with ultra-wideband that turns a compatible phone or smart card into a vehicle key. Over-the-air updates and Kia Connect services keep the software current, and wireless charging is standard from the EX up.
The K4's headline interior number is 38.0 inches of rear legroom, class-leading for the compact-sedan segment, backed by 37.3 inches of rear headroom and a roomy 42.3 inches up front. The trunk holds 14.6 cubic feet, near the top of the class for a conventional sedan.
Comfort climbs with the trims: cloth seating on the LX and LXS gives way to SynTex on the EX and GT-Line, heated front seats become standard on the EX, and the GT-Line Turbo's packages add ventilated front seats and a heated steering wheel.
| Measurement | 2026 K4 Sedan |
|---|---|
| Length | 185.4 in |
| Width | 72.8 in |
| Height | 55.9 in |
| Wheelbase | 107.1 in |
| Front legroom | 42.3 in |
| Rear legroom | 38.0 in |
| Front headroom | 39.0 in |
| Rear headroom | 37.3 in |
| Trunk volume | 14.6 cu ft |
| Seating | 5 |
Every 2026 K4 carries a standard driver-assistance suite that covers Forward Collision-Avoidance Assist with car, pedestrian, cyclist, and junction-turning detection, Lane Keeping and Lane Following Assist, Smart Cruise Control with Stop and Go, Driver Attention Warning, and High Beam Assist.
The LXS adds Blind-Spot Collision-Avoidance Assist, Rear Cross-Traffic Collision-Avoidance Assist, and Safe Exit Warning, which carry through the rest of the lineup. The GT-Line Turbo's Technology Package adds a Surround View Monitor, Blind-Spot View Monitor, Parking Distance Warning, and Digital Key 2.0, with Highway Driving Assist available to ease longer drives.
The K4 also includes 8 airbags with standard rear side airbags, and it is a 2026 IIHS Top Safety Pick+ that earned the highest Overall Vehicle Score in NHTSA testing.
The 2026 K4 lineup starts in the low-$20Ks for the LX and runs to the high-$20Ks for the GT-Line Turbo, before destination, taxes, and fees. Every K4 is backed by Kia's 10-year/100,000-mile limited powertrain warranty, one of the longest in the industry, along with a 5-year/60,000-mile limited basic warranty.
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The 2026 K4 makes a strong case in the compact class with its available turbo, generous rear room, and segment-above technology. Compare trims, check current availability, and line up a test drive whenever you're ready at Mike Kelly Kia, serving Butler County and Western Pennsylvania.
Search New Inventory Schedule a Test DriveWhat's new on the 2026 Kia K4?
The 2026 K4 carries over from its 2025 redesign and adds comfort features: SynTex seating on the EX and GT-Line, plus heated front seats and a rear folding armrest on the EX. New option packages bring a 12.3-inch ccNC cluster and a heated steering wheel to the GT-Line.
Which K4 trim has the turbocharged engine?
The 1.6L turbocharged engine, rated at 190 horsepower and 195 lb-ft of torque, is exclusive to the GT-Line Turbo. The other 4 trims use the 2.0L engine with 147 horsepower.
How much rear legroom does the K4 sedan have?
The 2026 K4 sedan offers 38.0 inches of rear legroom, class-leading for the compact-sedan segment, along with 37.3 inches of rear headroom. Its trunk holds 14.6 cubic feet.
What fuel economy does the 2026 K4 get?
The 2.0L K4 earns an EPA-estimated 29 mpg city, 39 mpg highway, and 33 mpg combined. The GT-Line Turbo returns an EPA-estimated 26 city, 33 highway, and 28 combined.
Is the 2026 Kia K4 all-wheel drive?
No. Every 2026 K4 is front-wheel drive, using either the 2.0L engine with an Intelligent Variable Transmission or the 1.6L turbo with an 8-speed automatic.
Is the 2026 K4 a safe car?
The 2026 K4 is a 2026 IIHS Top Safety Pick+ and earned the highest Overall Vehicle Score in NHTSA testing. It includes a standard suite of driver-assistance features and 8 airbags, with a Surround View Monitor and Highway Driving Assist available on the GT-Line Turbo.
How much does the 2026 Kia K4 cost?
The 2026 K4 starts in the low-$20Ks for the LX and reaches the high-$20Ks for the GT-Line Turbo, before destination and fees. Contact Mike Kelly Kia for current pricing on a specific trim.
Warranties include 10-year/100,000-mile powertrain and 5-year/60,000-mile basic. All warranties and roadside assistance are limited. See retailer for warranty details.
Picture may not represent actual vehicle. Price varies based on Trim Levels and Options. See Dealer for in-stock inventory & actual selling price. Online pricing subject to verification by dealership and subject to errors and omissions. All prices plus tax, title & Doc Fee ($490), with approved credit.