2025 Audi S8 vs 2026 BMW M2 CS
Comparison Overview
The most significant numerical difference between the 2025 Audi S8 and the 2026 BMW M2 CS is the $26,700 MSRP gap, positioning the M2 CS at $98,600 versus the S8's $125,300. Performance metrics show the S8 holding a notable edge with 563 hp and 590 lb-ft of torque compared to the M2 CS's 523 hp and 479 lb-ft. Fuel economy is heavily skewed towards the smaller coupe, as the S8 manages only 18 combined MPG, whereas the M2 CS offers superior efficiency, albeit requiring premium fuel for both. Furthermore, the S8 is significantly larger at 209.5 inches long, while the M2 CS provides a slightly larger trunk at 13.8 cu ft versus the S8's 12.5 cu ft. These quantifiable disparities define the choice between full-size luxury performance and compact track-focused aggression.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 Audi S8
The larger 209.5-inch length and premium all-wheel-drive comfort of the Audi S8 generally suit daily commuting better than the tight coupe format.
2025 Audi S8
As a sedan, the Audi S8 offers a more practical body style, though both offer limited cargo space for substantial family use.
2025 Audi S8
The Audi S8 delivers superior straight-line grunt with 563 hp and 590 lb-ft of torque, despite the BMW's RWD focus.
2026 BMW M2 CS
The BMW M2 CS offers competitive performance figures for $26,700 less than the Audi S8.
Choose the Audi S8 if...
- Your primary need is superior raw output, demonstrated by its 563 hp rating.
- You require the stability and traction offered by its standard all-wheel drive system.
- You prefer a larger overall footprint, indicated by its 209.5-inch length.
Choose the BMW M2 CS if...
- Budget constraints favor the significantly lower $98,600 MSRP compared to the S8.
- You prioritize a slightly better utility metric, possessing 13.8 cu ft of cargo space.
- Your driving preference leans toward the engagement of a smaller, rear-wheel-drive platform.
Key Dimensions
| Dimension | Audi S8 | BMW M2 CS |
|---|---|---|
| Length | 209.5" | 180.6" |
| Width | 76.6" | 74.3" |
| Height | 58.5" | 54.9" |
| Wheelbase | 123.2" | 108.1" |
Features Comparison
Safety
| Feature | Audi | BMW |
|---|---|---|
| Lane Departure Warning | ✓ | ✓ |
| Pre-Collision Safety System | ✓ | ✓ |
| Post-Collision Safety System | ✓ | ✓ |
| Dual Front Side-Mounted Airbags | ✓ | ✓ |
| Dual Rear 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 |
| Front Ventilated Disc Brakes | ✓ | ✓ |
| Rear Ventilated Disc Brakes | ✓ | ✓ |
| Brake Preparation System | ✓ | ✓ |
| Brake Assist | ✓ | ✓ |
| Tire Pressure Monitoring System | ✓ | ✓ |
| Automatic Headlights | ✓ | ✓ |
| Headlight Delay-Off | ✓ | ✓ |
| LED Headlights | ✓ | ✓ |
| Self-Leveling Headlights | ✓ | ✓ |
| Daytime Running Lights | ✓ | ✓ |
| Cornering Lights | ✓ | — |
| Headlight Washers | ✓ | — |
| Front Fog Lights | ✓ | — |
| Integrated Turn Signal Mirrors | ✓ | — |
| Front Headrests | 2 | 2 |
| Front Height Adjustable Headrests | ✓ | — |
| Rear Headrests | 3 | 2 |
| Rear Height Adjustable Headrests | ✓ | — |
| Rear Center 3-Point Seatbelt | ✓ | — |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Blind Spot Monitor | — | ✓ |
| Lane Keeping Assist System | — | ✓ |
| Rear Cross Traffic Alert | — | ✓ |
| Brake Drying | — | ✓ |
| Adaptive Headlights | — | ✓ |
| Front Integrated Headrests | — | ✓ |
| Rear Folding Headrests | — | ✓ |
Engine
| Feature | Audi | BMW |
|---|---|---|
| Base Engine Displacement | 4.0 L | 3.0 L |
| Number of Cylinders | V8 | inline 6 |
| Base Engine Type | mild hybrid | gas |
| Horsepower | 563 hp | 523 hp @ 6250 rpm |
| Torque | 590 lb-ft | 479 lb-ft @ 2750 rpm |
| Number of Valves | 32 | 24 |
| Camshaft Type | Double overhead cam (DOHC) | Double overhead cam (DOHC) |
| Variable Valve Timing | Variable | Variable |
| Fuel Injection Type | ✓ | ✓ |
| Cylinder Deactivation | ✓ | — |
Drive Train
| Feature | Audi | BMW |
|---|---|---|
| Transmission Type | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain Type | all wheel drive | rear wheel drive |
| [object Object] | ✓ | — |
| [object Object] | ✓ | — |
| Rear Differential Type | — | Limited Slip |
Fuel
| Feature | Audi | BMW |
|---|---|---|
| Fuel Type | premium unleaded (required) | premium unleaded (required) |
| EPA Fuel Economy (City/Highway) | 15/24 MPG | — |
| EPA Fuel Economy (Combined) | 18 MPG | — |
| EPA Driving Range (City/Highway) | 325.5/520.8 mi. | 0/0 mi. |
| Fuel Tank Capacity | 21.7 gal. | 13.7 gal. |
Comfort & Convenience
| Feature | Audi | BMW |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Power Tilt and Telescopic Steering Wheel | ✓ | — |
| Transmission Controls on Steering Wheel | ✓ | ✓ |
| Audio Controls on Steering Wheel | ✓ | ✓ |
| Electric Power Steering | ✓ | ✓ |
| Front View Camera | ✓ | — |
| Side View Camera | ✓ | — |
| Rear View Camera | ✓ | ✓ |
| Front Parking Sensors | ✓ | ✓ |
| Rear Parking Sensors | ✓ | ✓ |
| Wireless Charging Pad | ✓ | ✓ |
| Cruise Control | ✓ | ✓ |
| Universal Remote Transmitter | ✓ | ✓ |
| Front Cupholders | ✓ | — |
| Rear Cupholders | ✓ | — |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | — |
| Front Seatback Storage | ✓ | — |
| Leather Steering Wheel | ✓ | — |
| Heated Steering Wheel | ✓ | ✓ |
| Four Zone Climate Control | ✓ | — |
| Rear Ventilation Ducts with Fan Control | ✓ | — |
| Interior Air Filtration | ✓ | ✓ |
| Extended Cabin Heating | ✓ | — |
| Dual Vanity Mirrors | ✓ | — |
| Auto-Dimming Rearview Mirror | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | — |
| Cooled Storage Compartment | ✓ | — |
| Tilt and Telescopic Steering Wheel | — | ✓ |
| Cruise Control on Steering Wheel | — | ✓ |
| Steering Wheel Material | — | Simulated Suede/Carbon Fiber |
| Dual Zone Climate Control | — | ✓ |
| Rear Ventilation Ducts | — | ✓ |
In Car Entertainment
| Feature | Audi | BMW |
|---|---|---|
| Infotainment Display | 10.1 in | 14.9 in |
| AM/FM Stereo | ✓ | ✓ |
| Premium Brand Speakers | Bang & Olufsen | — |
| Stereo Power | 730W | — |
| Speaker System | 17 | — |
| Surround Audio | Discrete | Discrete |
| Android Auto (Wireless) | ✓ | ✓ |
| Apple CarPlay (Wireless) | ✓ | ✓ |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | 3 months | 12 months |
| Speed Sensitive Volume Control | ✓ | — |
| Premium Speaker Brand | — | Harman/Kardon |
Power Feature
| Feature | Audi | BMW |
|---|---|---|
| One-Touch Power Windows | 4 | 2 |
| Moonroof Type | 1st Row Power Glass | — |
| Keyless Entry | ✓ | ✓ |
| Reverse Tilt Passenger Mirror | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
Frontseats
| Feature | Audi | BMW |
|---|---|---|
| Front Head Room | 38.3 in. | 39.8 in. |
| Front Leg Room | 41.5 in. | 41.8 in. |
| Front Shoulder Room | 59.1 in. | — |
| Seat Material: Premium Leather | ✓ | — |
| Front Seat Type: Sport | ✓ | ✓ |
| Driver Seat Power Adjustments | 18-way | — |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | — |
| Driver Seat Memory Settings | 2 | — |
| Passenger Seat Power Adjustments | 18-way | — |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | — |
| Driver Seat Heating | Multi-level | Multi-level |
| Passenger Seat Heating | Multi-level | Multi-level |
| Driver Seat Ventilation | ✓ | — |
| Passenger Seat Ventilation | ✓ | — |
| Seat Massage Function | ✓ | — |
| Seat Material: Leather | — | ✓ |
Rearseats
| Feature | Audi | BMW |
|---|---|---|
| Rear Head Room | 38.5 in. | 35.0 in. |
| Rear Leg Room | 44.3 in. | 32.2 in. |
| Rear Shoulder Room | 57.6 in. | — |
| Split-Folding Rear Seatback | ✓ | — |
| Folding Rear Seat Feature | ✓ | — |
| Pass-Thru Center Armrest | ✓ | — |
Tires and Wheels
| Feature | Audi | BMW |
|---|---|---|
| Wheel Material | Alloy | — |
| Wheel Size | 21 in | 20 x 10.5 in. |
| Tire Type | Performance | Performance |
| Tire Size | 265/35R21 | 285/30R |
| Spare Tire Type | Temporary | — |
| Spare Tire Location | Inside Mounted | — |
| Wheel Finish | — | Painted Alloy |
Suspension
| Feature | Audi | BMW |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | — | ✓ |
| Rear Stabilizer Bar | — | ✓ |
Warranty
| Feature | Audi | BMW |
|---|---|---|
| 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. |
Frequently Asked Questions
Common questions about comparing the 2025 Audi S8 and 2026 BMW M2 CS.
How much worse is the fuel economy for the Audi S8?
The Audi S8 is rated at 18 combined MPG (15 city/24 highway), making it substantially less efficient than the BMW M2 CS (specific MPG not provided for the M2 CS, but the S8's figures are low for the segment). Both vehicles mandate the use of premium unleaded fuel for optimal performance.
Is the performance gap between the two significant enough to justify the price difference?
The S8 offers 40 more horsepower (563 hp vs. 523 hp) and 111 lb-ft more torque (590 lb-ft vs. 479 lb-ft), which is substantial, but you pay an extra $26,700 for it. The M2 CS provides nearly comparable performance for a lower entry cost.
Which car is physically larger for practicality?
The Audi S8 is classified as a sedan and is significantly longer at 209.5 inches compared to the M2 CS coupe's 180.6 inches. However, the M2 CS has slightly more cargo volume at 13.8 cu ft versus the S8's 12.5 cu ft.
Do both models use the same type of transmission?
Yes, both the 2025 Audi S8 and the 2026 BMW M2 CS are equipped with an 8-speed shiftable automatic transmission.
How does the drivetrain fundamentally differ between these two performance vehicles?
The Audi S8 employs an all-wheel drive system, distributing power to all four wheels for enhanced traction. In contrast, the BMW M2 CS utilizes a traditional rear-wheel drive layout, prioritizing a more focused dynamic experience.
What is the base cost difference when comparing the two?
There is a clear $26,700 financial barrier separating the two vehicles, with the 2026 BMW M2 CS starting at $98,600 and the 2025 Audi S8 starting at $125,300.
More Luxury Sedans Over $80,000
View allVehicle Details
Compare More Vehicles
Use our interactive comparison tool to compare up to 4 vehicles at once
Open Comparison Tool