2025 BMW M3 vs 2026 Audi S3
Comparison Overview
The most striking numerical divergence between the 2025 BMW M3 and the 2026 Audi S3 is the $24,700 difference in MSRP, with the M3 starting at $76,700 compared to the S3's $52,000. This price gap reflects substantial performance disparities; the M3 delivers 473 hp and 406 lb-ft of torque, eclipsing the S3's 328 hp and 295 lb-ft. Conversely, fuel economy heavily favors the Audi, which achieves a 26 MPG combined rating versus the M3's 19 MPG. While the M3 offers a larger cargo capacity at 16.9 cu ft versus 8.3 cu ft, the S3 compensates with standard All-Wheel Drive (AWD) against the M3's Rear-Wheel Drive (RWD). The M3 is also dimensionally larger, measuring 189.1 inches in length.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2026 Audi S3
The 2026 Audi S3 wins for commuters due to its superior combined fuel economy rating of 26 MPG versus the M3's 19 MPG.
2025 BMW M3
The 2025 BMW M3 provides 16.9 cu ft of cargo capacity, substantially more than the S3's 8.3 cu ft.
2025 BMW M3
The BMW M3 offers significantly higher output with 473 hp and a classic 6-speed manual transmission.
2026 Audi S3
The Audi S3 offers superior efficiency and standard AWD for $24,700 less than the base M3.
Choose the BMW M3 if...
- Performance is the priority, leveraging the M3's 473 hp and 406 lb-ft of torque.
- A manual driving experience is required, as the M3 comes standard with a 6-speed manual transmission.
- Maximum usable trunk space is necessary, provided by the M3's 16.9 cu ft cargo capacity.
Choose the Audi S3 if...
- Maximizing fuel efficiency is key, evidenced by the S3's 26 MPG combined rating.
- Standard traction across varied weather is desired, thanks to the S3's All-Wheel Drive system.
- A lower initial investment is preferred, given the $52,000 MSRP compared to the M3's $76,700.
Key Dimensions
| Dimension | BMW M3 | Audi S3 |
|---|---|---|
| Length | 189.1" | 177.4" |
| Width | 74.3" | 71.5" |
| Height | 56.6" | 55.7" |
| Wheelbase | 112.5" | 103.6" |
Features Comparison
Safety
| Feature | BMW | Audi |
|---|---|---|
| Blind Spot Monitor | ✓ | ✓ |
| Lane Departure Warning | ✓ | ✓ |
| Rear Cross Traffic Alert | ✓ | ✓ |
| Driver Attention Alert | ✓ | — |
| Pre-Collision Safety System | ✓ | ✓ |
| Post-Collision Safety System | ✓ | ✓ |
| Dual Front Side-Mounted Airbags | ✓ | ✓ |
| Front Head Airbags | ✓ | ✓ |
| Rear Head Airbags | ✓ | ✓ |
| Passenger Airbag Occupant Sensing Deactivation | ✓ | ✓ |
| Electronic Stability Control | ✓ | ✓ |
| Traction Control System | ✓ | ✓ |
| LATCH System | ✓ | ✓ |
| Rear Door Child Safety Locks | ✓ | ✓ |
| Anti-lock Brakes (ABS) | 4-Wheel | 4-Wheel |
| Brake Drying | ✓ | — |
| Front Ventilated Disc Brakes | ✓ | ✓ |
| Rear Ventilated Disc Brakes | ✓ | ✓ |
| Brake Preparation System | ✓ | — |
| Brake Assist | ✓ | ✓ |
| Tire Pressure Monitoring System | ✓ | ✓ |
| Automatic Headlights | ✓ | ✓ |
| LED Headlights | ✓ | ✓ |
| Self-Leveling Headlights | ✓ | — |
| Daytime Running Lights | ✓ | ✓ |
| Integrated Turn Signal Mirrors | ✓ | ✓ |
| Front Headrests | 2 | 2 |
| Front Fixed Headrests | ✓ | ✓ |
| Rear Headrests | 3 | 3 |
| Rear Height Adjustable Headrests | ✓ | ✓ |
| Rear Center 3-Point Seatbelt | ✓ | ✓ |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Dual Rear Side-Mounted Airbags | — | ✓ |
| Headlight Washers | — | ✓ |
Engine
| Feature | BMW | Audi |
|---|---|---|
| Base Engine Displacement | 3.0 L | 2.0 L |
| Number of Cylinders | inline 6 | inline 4 |
| Base Engine Type | gas | gas |
| Horsepower | 473 hp @ 6250 rpm | 328 hp |
| Torque | 406 lb-ft @ 2650 rpm | 295 lb-ft |
| Number of Valves | 24 | 16 |
| Camshaft Type | Double overhead cam (DOHC) | Double overhead cam (DOHC) |
| Variable Valve Timing | Variable | Variable |
| Fuel Injection Type | ✓ | ✓ |
Drive Train
| Feature | BMW | Audi |
|---|---|---|
| Transmission Type | 6-speed manual | 7-speed automated manual |
| Drivetrain Type | rear wheel drive | all wheel drive |
| Rear Differential Type | Limited Slip | — |
| Center Differential Type | — | Limited Slip |
| Hill Descent Control | — | ✓ |
Fuel
| Feature | BMW | Audi |
|---|---|---|
| Fuel Type | premium unleaded (required) | premium unleaded (required) |
| EPA Fuel Economy (City/Highway) | 16/23 MPG | 23/31 MPG |
| EPA Fuel Economy (Combined) | 19 MPG | 26 MPG |
| EPA Driving Range (City/Highway) | 249.6/358.8 mi. | 333.5/449.5 mi. |
| Fuel Tank Capacity | 15.6 gal. | 14.5 gal. |
Comfort & Convenience
| Feature | BMW | Audi |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Tilt and Telescopic Steering Wheel | ✓ | ✓ |
| Audio Controls on Steering Wheel | ✓ | ✓ |
| Cruise Control on Steering Wheel | ✓ | — |
| Electric Power Steering | ✓ | ✓ |
| Rear View Camera | ✓ | ✓ |
| Front Parking Sensors | ✓ | ✓ |
| Rear Parking Sensors | ✓ | ✓ |
| Wireless Charging Pad | ✓ | ✓ |
| Cruise Control | ✓ | ✓ |
| Universal Remote Transmitter | ✓ | ✓ |
| Front Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | ✓ |
| Leather Steering Wheel | ✓ | ✓ |
| Dual Zone Climate Control | ✓ | — |
| Rear Ventilation Ducts | ✓ | ✓ |
| Interior Air Filtration | ✓ | ✓ |
| Dual Vanity Mirrors | ✓ | ✓ |
| Auto-Dimming Rearview Mirror | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | ✓ |
| Transmission Controls on Steering Wheel | — | ✓ |
| Driver Assisted Parking Assist | — | ✓ |
| Rear Cupholders | — | ✓ |
| Front Seatback Storage | — | ✓ |
| Three Zone Climate Control | — | ✓ |
In Car Entertainment
| Feature | BMW | Audi |
|---|---|---|
| Infotainment Display | 14.9 in | 10.1 in |
| AM/FM Stereo | ✓ | ✓ |
| Premium Speaker Brand | Harman/Kardon | Sonos |
| Stereo Power | 464W | 680W |
| Speaker System | 16 | 15 |
| Subwoofer Count | 2 | — |
| Surround Audio | Discrete | Discrete |
| Android Auto (Wired) | ✓ | — |
| Apple CarPlay (Wired) | ✓ | — |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | 12 months | 3 months |
| Android Auto (Wireless) | — | ✓ |
| Apple CarPlay (Wireless) | — | ✓ |
Power Feature
| Feature | BMW | Audi |
|---|---|---|
| One-Touch Power Windows | 4 | 4 |
| Keyless Entry | ✓ | ✓ |
| Reverse Tilt Passenger Mirror | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
| Moonroof Type | — | 1st Row Power Glass Extended |
Frontseats
| Feature | BMW | Audi |
|---|---|---|
| Front Head Room | 40.6 in. | 36.8 in. |
| Front Leg Room | 41.6 in. | 41.2 in. |
| Front Shoulder Room | 56.0 in. | 54.8 in. |
| Seat Material: Premium Leather | ✓ | — |
| Front Seat Type: Sport | ✓ | ✓ |
| Driver Seat Power Adjustments | 10-way | 8-way |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | Power |
| Driver Seat Thigh Extension | ✓ | — |
| Driver Seat Memory Settings | 2 | — |
| Passenger Seat Power Adjustments | 10-way | 8-way |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | Power |
| Passenger Seat Thigh Extension | ✓ | — |
| Driver Seat Heating | Multi-level | Multi-level |
| Passenger Seat Heating | Multi-level | Multi-level |
| Seat Material: Leather/Sueded Microfiber | — | ✓ |
Rearseats
| Feature | BMW | Audi |
|---|---|---|
| Rear Head Room | 37.8 in. | 36.6 in. |
| Rear Leg Room | 35.6 in. | 35.2 in. |
| Rear Shoulder Room | 54.6 in. | 53.0 in. |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Folding Rear Seat Feature | — | ✓ |
| Pass-Thru Center Armrest | — | ✓ |
Tires and Wheels
| Feature | BMW | Audi |
|---|---|---|
| Wheel Finish | Painted Alloy | — |
| Wheel Size | 19 x 10.5 in | — |
| Tire Type | Performance | All Season |
| Tire Size | 285/35R Z | 225/40R18 |
| Wheel Material | — | Alloy |
| Wheel Diameter | — | 18 in |
Suspension
| Feature | BMW | Audi |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | ✓ | ✓ |
| Rear Stabilizer Bar | ✓ | ✓ |
Warranty
| Feature | BMW | Audi |
|---|---|---|
| Basic Warranty | 4 yr./ 50000 mi. | 4 yr./ 50000 mi. |
| Drivetrain Warranty | 4 yr./ 50000 mi. | 4 yr./ 50000 mi. |
| Corrosion/Rust Warranty | 12 yr./ unlimited mi. | 12 yr./ unlimited mi. |
| Roadside Assistance | 4 yr./ unlimited mi. | 4 yr./ unlimited mi. |
| Complimentary Scheduled Maintenance | 3 yr./ 36000 mi. | 3 yr./ 30000 mi. |
Frequently Asked Questions
Common questions about comparing the 2025 BMW M3 and 2026 Audi S3.
What is the main powertrain difference between the 2025 BMW M3 and the 2026 Audi S3?
The 2025 BMW M3 is significantly more powerful, producing 473 hp from its engine, whereas the 2026 Audi S3 generates 328 hp. Furthermore, the M3 utilizes a traditional 6-speed manual transmission while the S3 employs a 7-speed automated manual.
Which sedan is more economical for daily driving between these two models?
The 2026 Audi S3 is clearly more economical, achieving a combined 26 MPG compared to the 2025 BMW M3's 19 MPG combined rating. Both require premium unleaded fuel.
How does cargo space compare for errands or road trips?
The BMW M3 offers substantially more cargo space at 16.9 cu ft, which is nearly double the 8.3 cu ft provided by the Audi S3.
What justifies the $24,700 price difference between the two vehicles?
The higher MSRP of the BMW M3 reflects its substantially greater output (145 hp difference) and larger overall dimensions, being over 11 inches longer than the Audi S3.
Does the difference in drive type matter for this comparison?
Yes, the M3 is Rear Wheel Drive (RWD), favoring traditional sport handling, while the S3 includes All-Wheel Drive (AWD) as standard, generally improving traction stability.
Are the physical dimensions drastically different for garage fitment?
The BMW M3 is wider at 74.3 inches and longer at 189.1 inches compared to the S3's 71.5-inch width and 177.4-inch length.
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