2025 Kia
K5
Starting MSRP
$26,975
Combined MPG
32
Horsepower
191
Your Comparison
2024 Mazda
6
Starting MSRP
$26,600
Combined MPG
30
Horsepower
187
Quick Category Winners
Value
K5
Performance
6
Comfort
6
Fuel Economy
K5
Reliability
6
Interior
6
Technology
K5
Overall
6
Scorecard Comparison
8.4
Performance
8.5
7.9
Comfort
8.0
8.6
Value
8.0
7.9
Ownership Cost
8.0
8.3
Technology
7.8
8.1
Safety
8.4
7.7
Reliability
8.3
8.0
Interior Quality
8.7
K5
6
CHOOSE THE K5 IF YOU:
- Want sportier styling at the lowest price
- Prefer a more aggressive driving feel
- Value strong standard equipment
CHOOSE THE 6 IF YOU:
- Want the most upscale interior in the class
- Care about engaging driving dynamics
- Prefer understated, refined styling
5-Year Ownership Cost
| Category | K5 | 6 | Diff |
|---|---|---|---|
| Fuel | $6,500 | $7,100 | -$600 |
| Insurance | $6,300 | $6,400 | -$100 |
| Maintenance | $3,750 | $4,000 | -$250 |
| Repairs | $1,500 | $1,600 | -$100 |
| Depreciation | $13,800 | $14,800 | -$1,000 |
| 5-Year Total | $31,850 | $33,900 | -$2,050 |
$
The K5 costs an estimated $2,050 less to own over 5 years.
Size Comparison
K5
6
K5
6
Diff
Length
193.1
191.5
+1.6
Width
73.2
72.4
+0.8
Height
56.9
57.1
-0.2
Wheelbase
112.2
111.4
+0.8
Cargo Volumecu ft
16.0
14.7
+1.3
Trim-to-Trim Comparison
- K5 LXvs6 Sport
- K5 GT-Linevs6 Touring
- K5 GTvs6 Signature
Final Verdict
The Mazda 6 is the smarter overall pick across our scoring categories, especially in the areas it leads. The Kia K5 remains a strong alternative if its standout strengths better match your priorities. Either way, both are credible choices in this segment.
Winner
Mazda 6
Best For…
- Commuters6
- Families6
- Resale ValueTie
- Driving Enjoyment6
- TechnologyK5
- Best Overall6
Frequently Asked Questions
The Kia K5 is better for shoppers who weight want sportier styling at the lowest price, while the Mazda 6 is better if you want the most upscale interior in the class. Both compete closely overall.
Our scoring gives the edge to the Mazda 6, though the Kia K5 also performs well in long-term reliability data.
The Kia K5 leads with up to 32 combined MPG versus 30 for the Mazda 6.
The Mazda 6 is the better family pick thanks to its higher comfort scoring, slightly more usable cabin space, and a more relaxed ride.
Over a five-year ownership window, the Kia K5 costs an estimated $2,050 less to own once you factor in fuel, insurance, maintenance, repairs, and depreciation.
The Kia K5 tends to hold its value better in the used market, helped by stronger demand and a higher overall value score.