2025 BMW 3 Series M340i vs 2025 Genesis G70 2.5T
6 mpg better and 86 more hp vs $15,600 less and AWD. That is the real fork. Key numbers: 386 vs 300 hp, 29 vs 23 MPG.
The 3 Series M340i leads on 6 MPG better, 86 more hp. The G70 2.5T leads on $15,600 less, AWD. The spec table compares 8 specifications head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 8 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 | 2025 BMW 3 Series M340i | 2025 Genesis G70 2.5T |
|---|---|---|
| Pricing | ||
| MSRP | $60,200 | $44,600 |
| Powertrain | ||
| Engine | 3.0L I6 mild-hybrid Turbo | 2.5L I4 Turbo |
| Horsepower | 386 hp | 300 hp |
| Torque | 398 lb-ft | 311 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | RWD | AWD |
| Fuel Economy | ||
| City MPG | 27 | 20 |
| Highway MPG | 33 | 28 |
| Combined MPG | 29 | 23 |
| Fuel Tank | 15.6 gal | 15.8 gal |
| Annual Fuel Cost (EPA) | $2,000/yr | $2,500/yr |
| Dimensions | ||
| Curb Weight | 3,834 lbs | 3,920 lbs |
| Wheelbase | 112.2" | 111.6" |
| Length | 185.9" | 184.4" |
| Width | 71.9" | 72.8" |
| Height | 56.4" | 55.1" |
| Safety | ||
| NHTSA Overall | 5/5 stars | No published data |
| Warranty | ||
| Bumper-to-Bumper | 4yr/50k | 5yr/60k |
| Powertrain | 4yr/50k | 10yr/100k |
| Corrosion | 12yr/unlimited | 5yr/unlimited |
| Roadside Assistance | 4yr/unlimited | 5yr/unlimited |
Frequently Asked Questions
What is the price difference between the 2025 BMW 3 Series M340i and 2025 Genesis G70 2.5T?
The 2025 Genesis G70 2.5T starts at $44,600, $15,600 less than the 2025 BMW 3 Series M340i at $60,200. On a 60-month loan that is roughly $275/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2025 BMW 3 Series M340i?
The 2025 BMW 3 Series M340i is the stronger pick when lower running costs matter to you, roughly $378/year less on fuel; the extra 86 hp matters for your commute or driving style.
Who should choose the 2025 Genesis G70 2.5T?
The 2025 Genesis G70 2.5T is the stronger pick when you want to keep $15,600 in your pocket and the 2025 Genesis G70 2.5T covers your needs; you drive in snow, rain, or unpaved roads where AWD keeps you planted.
Which gets better fuel economy, the 2025 BMW 3 Series M340i or 2025 Genesis G70 2.5T?
The 2025 BMW 3 Series M340i rates 29 combined MPG, 6 MPG ahead.
Which is more powerful, the 2025 BMW 3 Series M340i or 2025 Genesis G70 2.5T?
The 2025 BMW 3 Series M340i produces 386 hp, 86 more than the 2025 Genesis G70 2.5T at 300 hp. The 2025 BMW 3 Series M340i also leads in torque at 398 lb-ft vs 311 lb-ft. The 2025 BMW 3 Series M340i runs a 3.0L I6 mild-hybrid Turbo; the 2025 Genesis G70 2.5T uses a 2.5L I4 Turbo. Drivetrains differ too: RWD on the 2025 BMW 3 Series M340i, AWD on the 2025 Genesis G70 2.5T.
Is the 2025 BMW 3 Series M340i bigger than the 2025 Genesis G70 2.5T?
The 2025 BMW 3 Series M340i is 1.5″ longer at 185.9″ vs 184.4″. The 2025 BMW 3 Series M340i has a 0.6″ longer wheelbase, which typically means more rear-seat legroom.
Do the 2025 BMW 3 Series M340i and 2025 Genesis G70 2.5T have the same drivetrain?
No. The 2025 Genesis G70 2.5T comes with AWD, while the 2025 BMW 3 Series M340i uses RWD. 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 BMW 3 Series comes with 4yr/50k bumper-to-bumper and 4yr/50k powertrain. The Genesis G70 offers 5yr/60k bumper-to-bumper and 10yr/100k powertrain. Longer warranty coverage can offset higher maintenance costs over time.
Explore more: BMW trims, BMW 3 Series trims, Genesis trims, Genesis G70 trims
- 2025 BMW 3 Series M340i Safety Ratings (NHTSA)
- Compare Fuel Economy (EPA)
3 Series vs G70: What This Matchup Is Really About
The 2025 BMW 3 Series M340i and 2025 Genesis G70 2.5T are both compact cars competing for the same buyer. Price, fuel economy, and daily comfort are the tie-breakers. The $-15,600 gap adds up to $275/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
The 2025 BMW 3 Series M340i runs a 3.0L I6 mild-hybrid Turbo; the 2025 Genesis G70 2.5T uses a 2.5L I4 Turbo. The 2025 BMW 3 Series M340i has 86 more hp (386 vs 300). You will feel the difference merging, passing, and driving with a full car. The 2025 BMW 3 Series M340i adds 87 more lb-ft of torque (398 vs 311), giving it stronger low-end pull off the line. The 2025 Genesis G70 2.5T comes with AWD; the 2025 BMW 3 Series M340i uses RWD. If you deal with snow, rain, or gravel roads, that traction advantage matters.
Running Costs: 3 Series vs G70
The 2025 BMW 3 Series M340i saves roughly $378/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $1,890.
Bottom Line
Choose the 2025 BMW 3 Series M340i when lower running costs matter to you, roughly $378/year less on fuel. Choose the 2025 Genesis G70 2.5T when you want to keep $15,600 in your pocket and the 2025 Genesis G70 2.5T covers your needs.
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 BMW or Genesis or any dealership.