2026 Mazda 3 2.5 S vs 2025 Nissan Altima 2.5 S
$1,450 less vs 2 MPG better and 17.3″ longer. That is the real fork. Key numbers: $1,450 price gap, 186 vs 188 hp, 29 vs 31 MPG.
The 3 2.5 S leads on $1,450 less. The Altima 2.5 S leads on 2 MPG better, 17.3″ longer. The spec table compares 5 specifications head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 5 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 Mazda 3 2.5 S | 2025 Nissan Altima 2.5 S |
|---|---|---|
| Pricing | ||
| MSRP | $25,550 | $27,000 |
| Powertrain | ||
| Engine | 2.5L I4 | 2.5L I4 |
| Horsepower | 186 hp | 188 hp |
| Torque | 186 lb-ft | 180 lb-ft |
| Transmission | 6-speed shiftable automatic | continuously variable-speed automatic |
| Drivetrain | FWD | FWD |
| Fuel Economy | ||
| City MPG | 26 | 27 |
| Highway MPG | 34 | 38 |
| Combined MPG | 29 | 31 |
| Fuel Tank | 13.2 gal | 16.2 gal |
| Annual Fuel Cost (EPA) | No published data | $1,400/yr |
| Dimensions | ||
| Curb Weight | 3,117 lbs | 3,253 lbs |
| Wheelbase | 107.3" | 111.2" |
| Length | 175.6" | 192.9" |
| Width | 70.7" | 72.9" |
| Height | 56.7" | 56.7" |
| Safety | ||
| NHTSA Overall | No published data | 5/5 stars |
| IIHS Award | TSP+ | No published data |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | 3yr/36k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 5yr/unlimited | 5yr/unlimited |
| Roadside Assistance | 3yr/36k | 3yr/36k |
Frequently Asked Questions
What is the price difference between the 2026 Mazda 3 2.5 S and 2025 Nissan Altima 2.5 S?
The 2026 Mazda 3 2.5 S starts at $25,550, $1,450 less than the 2025 Nissan Altima 2.5 S at $27,000. On a 60-month loan that is roughly $25/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2026 Mazda 3 2.5 S?
The 2026 Mazda 3 2.5 S is the stronger pick when you want to keep $1,450 in your pocket and the 2026 Mazda 3 2.5 S covers your needs; you prefer a smaller vehicle that is easier to park and maneuver.
Who should choose the 2025 Nissan Altima 2.5 S?
The 2025 Nissan Altima 2.5 S is the stronger pick when lower running costs matter to you, roughly $93/year less on fuel; you want the larger footprint for passengers or cargo.
Which gets better fuel economy, the 2026 Mazda 3 2.5 S or 2025 Nissan Altima 2.5 S?
The 2025 Nissan Altima 2.5 S rates 31 combined MPG, 2 MPG ahead.
Which is more powerful, the 2026 Mazda 3 2.5 S or 2025 Nissan Altima 2.5 S?
The 2025 Nissan Altima 2.5 S produces 188 hp, 2 more than the 2026 Mazda 3 2.5 S at 186 hp. The 2026 Mazda 3 2.5 S also leads in torque at 186 lb-ft vs 180 lb-ft.
Is the 2026 Mazda 3 2.5 S bigger than the 2025 Nissan Altima 2.5 S?
The 2025 Nissan Altima 2.5 S is 17.3″ longer at 192.9″ vs 175.6″. The 2025 Nissan Altima 2.5 S has a 3.9″ longer wheelbase, which typically means more rear-seat legroom.
How do the warranties compare?
Both offer similar warranty coverage: 3yr/36k bumper-to-bumper and 5yr/60k powertrain.
Explore more: Mazda trims, Mazda 3 trims, Nissan trims, Nissan Altima trims
- 2026 Mazda 3 2.5 S Safety Ratings (NHTSA)
- 2025 Nissan Altima 2.5 S Safety Ratings (NHTSA)
- Compare Fuel Economy (EPA)
How the 3 and Altima Stack Up
Two compact cars, two brands, and a decision that comes down to which one fits your commute and budget. The 2026 Mazda 3 2.5 S starts at $25,550; the 2025 Nissan Altima 2.5 S at $27,000. The $1,450 gap is about $25/month on a 60-month loan. Noticeable but not dramatic enough to be the deciding factor on its own.
Powertrain: 3 vs Altima
Both run the same 2.5L I4 engine. The 2 hp difference (188 vs 186) is marginal in daily driving. Both use FWD.
What It Actually Costs to Own
The 2025 Nissan Altima 2.5 S saves roughly $93/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $465.
Size, Space, and Daily Reality
The 2025 Nissan Altima 2.5 S is 17.3″ longer, which translates to more room inside but a larger footprint in parking lots and garages.
Which One Should You Buy?
Choose the 2026 Mazda 3 2.5 S when you want to keep $1,450 in your pocket and the 2026 Mazda 3 2.5 S covers your needs. Choose the 2025 Nissan Altima 2.5 S when lower running costs matter to you, roughly $93/year less on fuel. At $25/month apart, the price difference alone will not decide this.
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 Mazda or Nissan or any dealership.