2026 Kia K4 vs. 2026 Mazda3 Comparison

When you think “compact car,” a Honda Civic or Toyota Corolla might first come to mind, but models from Kia and Mazda are also worth considering. The 2026 Kia K4 and 2026 Mazda3 bring fun driving dynamics and affordability to the compact segment.

Let’s compare them.

2026 Kia K4

A plethora of features at an affordable price point is what this sharply styled sedan is all about. Also available as a hatchback or with a turbocharged engine, the Kia K4 is a roomy and practical choice that comes with five trim options.

Kia K4 Highlights

Affordable pricing: Starting at about $23,500, the cost of a Kia K4 is hard to beat. Even the top-tier GT-Line Turbo starts under $30,000. The Mazda3 starts about $2,500 higher at the base trim, with the top-of-the-line Turbo Premium Plus costing about $38,000.

Exceptional warranty: Kia is known for its industry-leading warranty. This includes a 10-year/100,000-mile limited powertrain warranty, a 5-year/60,000-mile basic warranty, and roadside assistance. The Mazda3 is backed by a 3-year/36,000-mile basic warranty and a 5-year/60,000-mile powertrain warranty.

Roomy interior: Although a compact car, adults won’t feel cramped riding in the backseats. The K4 offers 42 inches of front legroom and 38 inches of rear legroom. This contrasts with the 35 inches of rear legroom in the Mazda3.

Check this week’s Fair Purchase Price or see the K4 models for sale near you.

2026 Mazda3

The Mazda3 is available in six trim levels, including one turbocharged option. Its smart design and upscale interior make this compact car a fun drive that’s easy on the eyes and wallet.

Mazda3 Highlights

Powertrain: The Mazda3 lineup offers a choice of front-wheel drive (FWD) or all-wheel drive (AWD) and automatic or manual transmission, depending on the trim level. AWD provides improved grip on pavement and enhanced traction on slippery roads, making the Mazda3 a suitable choice for a wide range of climates. The Kia K4 models come standard with FWD only.

Driving style: Powered by a 186-horsepower 4-cylinder engine combined with a 6-speed automatic transmission, the Mazda3 offers impressive response for both city and highway driving. Most K4 models have a 147-hp 2.0-liter 4-cylinder engine, which is less responsive and pokier overall. The GT-Line Turbo K4 delivers 190 hp.

Mazda Harmonic Acoustics: Mazda’s 8-speaker audio system now comes standard, with an optional Bose 12-speaker system available for premium trims. Mazda’s in-house audio solution allows for a seamless blend between vehicle design and audio performance.

Check this week’s Fair Purchase Price or see the Mazda3 models for sale near you.

Similarities

Both compact sedans seat five and are now available in hatchback versions. Both the K4 and Mazda3 offer turbo engine options. There’s no shortage of tech and safety features on either car. Shared standard equipment includes Android Auto, Apple CarPlay, automatic emergency braking, lane-keeping assist, automatic high beams, and driver attention monitoring.

Pricing

The Kelley Blue Book Fair Purchase Price for any individual used vehicle can vary greatly according to mileage, condition, location, and other factors. The prices here reflect what buyers are currently paying for New 2026 Kia K4 vehicles and New 2026 MAZDA MAZDA3 vehicles in typical condition when purchasing from a dealership. These prices are updated weekly. The manufacturer’s suggested retail price (MSRP) quoted includes the destination fee, but does not include tax, license, document fees, and options.

Specifications

Conclusion

If you’re on a tight budget or need extra room in the interior for carpooling or transporting older children, the Kia K4 is a great deal for a compact car.

For more versatile options and a more exciting driving experience, the pricier Mazda3 could be well worth it.