2026 Kia K5 GT vs 2026 Mazda 3 2.5 Turbo Premium Plus
On paper, the 2026 Kia K5 GT wins on $4,300 less, 4 MPG better, 63 more hp. The 2026 Mazda 3 2.5 Turbo Premium Plus has to win you at the dealer. Key numbers: $4,300 price gap, 290 vs 227 hp, 30 vs 26 MPG.
The K5 GT leads on $4,300 less, 4 MPG better. The 3 2.5 Turbo Premium Plus leads on AWD. The spec table compares 6 specifications head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 6 specifications.
Full Specification Comparison
Specifications and pricing reflect available data as of early 2026 and may not match current manufacturer figures. Always confirm details with an authorized dealer before making a purchase decision.
| Spec | 2026 Kia K5 GT | 2026 Mazda 3 2.5 Turbo Premium Plus |
|---|---|---|
| Pricing | ||
| MSRP | $33,590 | $37,890 |
| Powertrain | ||
| Engine | 2.5L I4 Turbo | 2.5L I4 Turbo |
| Horsepower | 290 hp | 227 hp |
| Torque | 311 lb-ft | 310 lb-ft |
| Transmission | 8-speed automated manual | 6-speed shiftable automatic |
| Drivetrain | FWD | AWD |
| Fuel Economy | ||
| City MPG | 26 | 23 |
| Highway MPG | 37 | 31 |
| Combined MPG | 30 | 26 |
| Fuel Tank | 15.8 gal | 12.7 gal |
| Annual Fuel Cost (EPA) | $1,450/yr | No published data |
| Dimensions | ||
| Curb Weight | 3,596 lbs | 3,417 lbs |
| Wheelbase | 112.2" | 107.3" |
| Length | 193.1" | 175.6" |
| Width | 73.2" | 70.7" |
| Height | 56.9" | 56.7" |
| Safety | ||
| NHTSA Overall | 5/5 stars | No published data |
| IIHS Award | No published data | TSP+ |
| Warranty | ||
| Bumper-to-Bumper | 5yr/60k | 3yr/36k |
| Powertrain | 10yr/100k | 5yr/60k |
| Corrosion | 5yr/100k | 5yr/unlimited |
| Roadside Assistance | 5yr/60k | 3yr/36k |
Frequently Asked Questions
What is the price difference between the 2026 Kia K5 GT and 2026 Mazda 3 2.5 Turbo Premium Plus?
The 2026 Kia K5 GT starts at $33,590, $4,300 less than the 2026 Mazda 3 2.5 Turbo Premium Plus at $37,890. On a 60-month loan that is roughly $75/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2026 Kia K5 GT?
The 2026 Kia K5 GT is the stronger pick when you want to keep $4,300 in your pocket and the 2026 Kia K5 GT covers your needs; lower running costs matter to you, roughly $215/year less on fuel; the extra 63 hp matters for your commute or driving style.
Who should choose the 2026 Mazda 3 2.5 Turbo Premium Plus?
The 2026 Mazda 3 2.5 Turbo Premium Plus is the stronger pick when you drive in snow, rain, or unpaved roads where AWD keeps you planted; you prefer a smaller vehicle that is easier to park and maneuver.
Which gets better fuel economy, the 2026 Kia K5 GT or 2026 Mazda 3 2.5 Turbo Premium Plus?
The 2026 Kia K5 GT rates 30 combined MPG, 4 MPG ahead.
Which is more powerful, the 2026 Kia K5 GT or 2026 Mazda 3 2.5 Turbo Premium Plus?
The 2026 Kia K5 GT produces 290 hp, 63 more than the 2026 Mazda 3 2.5 Turbo Premium Plus at 227 hp. The 2026 Kia K5 GT also leads in torque at 311 lb-ft vs 310 lb-ft. Drivetrains differ too: FWD on the 2026 Kia K5 GT, AWD on the 2026 Mazda 3 2.5 Turbo Premium Plus.
Is the 2026 Kia K5 GT bigger than the 2026 Mazda 3 2.5 Turbo Premium Plus?
The 2026 Kia K5 GT is 17.5″ longer at 193.1″ vs 175.6″. The 2026 Kia K5 GT has a 4.9″ longer wheelbase, which typically means more rear-seat legroom.
Do the 2026 Kia K5 GT and 2026 Mazda 3 2.5 Turbo Premium Plus have the same drivetrain?
No. The 2026 Mazda 3 2.5 Turbo Premium Plus comes with AWD, while the 2026 Kia K5 GT uses FWD. If you drive in snow, heavy rain, or on unpaved roads, the all-wheel or four-wheel drive option provides better traction. If you mostly drive on dry pavement, the two-wheel drive option saves fuel.
How do the warranties compare?
The Kia K5 comes with 5yr/60k bumper-to-bumper and 10yr/100k powertrain. The Mazda 3 offers 3yr/36k bumper-to-bumper and 5yr/60k powertrain. Longer warranty coverage can offset higher maintenance costs over time.
Explore more: Kia trims, Kia K5 trims, Mazda trims, Mazda 3 trims
K5 vs 3: What This Matchup Is Really About
The 2026 Kia K5 GT and 2026 Mazda 3 2.5 Turbo Premium Plus are both midsize sedans competing for the same buyer. Price, fuel economy, and daily comfort are the tie-breakers. The $4,300 gap adds up to $75/month on a 60-month loan. That is real money, so the pricier option needs to earn it with capabilities you will actually use.
Under the Hood
Both run the same 2.5L I4 Turbo engine. The 2026 Kia K5 GT has 63 more hp (290 vs 227). You will feel the difference merging, passing, and driving with a full car. The 2026 Mazda 3 2.5 Turbo Premium Plus comes with AWD; the 2026 Kia K5 GT uses FWD. If you deal with snow, rain, or gravel roads, that traction advantage matters.
Running Costs: K5 vs 3
The 2026 Kia K5 GT saves roughly $215/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $1,075. The 2026 Kia K5 GT wins on both sticker price and running costs, making it the stronger value on paper.
How Each One Fits Your Daily Life
The 2026 Kia K5 GT is 17.5″ longer, which translates to more room inside but a larger footprint in parking lots and garages.
Bottom Line
Choose the 2026 Kia K5 GT when you want to keep $4,300 in your pocket and the 2026 Kia K5 GT covers your needs. Choose the 2026 Mazda 3 2.5 Turbo Premium Plus when you drive in snow, rain, or unpaved roads where AWD keeps you planted. At $75/month more, the 2026 Mazda 3 2.5 Turbo Premium Plus needs to earn that gap with something you use weekly.
Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with Kia or Mazda or any dealership.