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Drivers near Plainfield comparing the 2026 Kia K4 vs. Kia K5 are choosing between two dynamic sedans engineered for performance, comfort, and connected technology. The Kia K4 enters the lineup as an innovative compact sedan featuring a futuristic design, while the Kia K5 continues to set high standards as an athletic midsize sedan. Whether you want an agile commuter for navigating Somerset County or extra turbocharged performance on Route 22, Bridgewater Kia is here to highlight the key differences. Review our detailed comparison below, and feel free to apply for financing online to take your next step.
Compare the core specs and dimensions of the 2026 Kia K4 and 2026 Kia K5 side-by-side to see how these sedans match your driving preferences:
| Feature / Specification | 2026 Kia K4 | 2026 Kia K5 |
|---|---|---|
| Vehicle Segment | Compact Sedan | Midsize Sedan |
| Engine Powertrains Available | 2 Options (2.0L / 1.6L Turbo) | 2 Options (2.5L / 2.5L Turbo) |
| Maximum Horsepower | 190 hp | 290 hp |
| Maximum Torque | 195 lb-ft | 311 lb-ft |
| Trunk Cargo Volume | 14.6 cubic feet | 15.6 cubic feet |
| Infotainment Touchscreen | 12.3 inches | 12.3 inches |
Powertrain output is a major distinction when evaluating the 2026 Kia K4 vs. Kia K5. The Kia K5 offers higher baseline horsepower and an available high-output turbocharged GT trim for spirited driving. Conversely, the compact Kia K4 provides exceptionally agile handling, efficient power delivery, and responsive turbocharged output on higher trims for smooth everyday driving around Manville.
To learn more about the equipment packages available on the compact sedan, explore our comprehensive 2026 Kia K4 trim level guide.
Both models seat up to five passengers in comfortable, driver-centric cabins. Because the Kia K5 is built on a midsize platform, it delivers expanded front legroom and slightly more overall trunk space. Surprisingly, the compact Kia K4 offers greater second-row rear legroom (38.0 inches) than the Kia K5 (35.2 inches), giving back-seat passengers extra stretching room during commutes through Middlesex.
Intuitive technology defines both cabin designs. Each sedan includes large high-resolution touchscreens, seamless wireless phone connectivity, and standard Kia Drive Wise driver assistance systems. Highlighting available features across both models:
Is the Kia K4 bigger than the Kia K5?
No, the Kia K5 is larger overall than the Kia K4. The Kia K5 is classified as a midsize sedan and offers a longer wheelbase, greater front legroom (46.1 inches), and 15.6 cubic feet of trunk space. The Kia K4 is a compact sedan with 14.6 cubic feet of trunk space, though it offers 38.0 inches of rear legroom compared to 35.2 inches in the Kia K5.
Which sedan offers more horsepower, the Kia K4 or the Kia K5?
The Kia K5 produces more horsepower across both engine choices. The standard 2.5L engine in the Kia K5 outputs 191 hp, and its available 2.5L Turbo engine delivers up to 290 hp. The Kia K4 offers 147 hp from its standard 2.0L engine and 190 hp from its available 1.6L Turbo engine.
Does the Kia K4 replace the Kia Forte?
Yes, the Kia K4 is an all-new compact sedan that replaces the outgoing Kia Forte in the Kia vehicle lineup, bringing modern fastback styling and upgraded cabin technology.
Do both the Kia K4 and Kia K5 feature wireless Apple CarPlay® and Android Auto™?
Yes, wireless Apple CarPlay® and Android Auto™ integration come standard across the 12.3-inch touchscreen displays on both the Kia K4 and Kia K5.
Whether you prefer the compact efficiency and spacious rear seating of the Kia K4 or the midsize capability and high-output turbocharged performance of the Kia K5, Bridgewater Kia is your local destination for new Kia vehicles in Bridgewater. Our team is ready to assist you with trade-in appraisals, lease offers, and low-rate financing through our finance department. Contact our team today to schedule test drives and compare both models in person!
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