2026 Audi S8 vs 2026 BMW M4
Comparison Overview
The 2026 Audi S8 is the ultimate executive express, unleashing a tremendous 563 hp from its V8 while cloaked in stately luxury, offering serene high-speed cruising capability. Conversely, the 2026 BMW M4 rips the asphalt with aggressive, focused driving dynamics, defined by its intoxicating 6-speed manual transmission and pure rear-wheel-drive spirit. The financial gap is significant, with the S8 commanding an MSRP of $130,000 versus the M4's $81,300—a difference of $48,700. Power figures also diverge: the S8 boasts 90 more horsepower (563 hp vs. 473 hp) and substantially more torque (590 lb-ft). However, the M4's lighter footprint and focus on driver engagement results in much better efficiency, potentially offering an 18 MPG advantage over the S8's 18 combined MPG rating.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2026 Audi S8
The Audi S8's larger body and smoother automatic transmission offer superior ride comfort and refinement for daily highway commuting.
2026 Audi S8
The S8, as a full-size sedan, provides greater interior room and passenger space compared to the compact M4 coupe.
2026 BMW M4
The BMW M4 delivers a purer, more visceral driving experience via its 6-speed manual transmission and focused RWD architecture.
2026 BMW M4
The BMW M4 offers superior performance metrics per dollar, costing $48,700 less than the Audi S8 while still requiring premium fuel.
Choose the Audi S8 if...
- You require the effortless high-speed power generated by 563 hp and 590 lb-ft of torque.
- All-wheel drive security and a more substantial 209.5-inch length for presence are mandatory.
- Your budget allows for the $130,000 flagship sedan price tag.
Choose the BMW M4 if...
- The engagement of a 6-speed manual transmission is paramount to your driving pleasure.
- You prioritize a lower initial investment, saving $48,700 over the S8.
- You prefer the tighter handling characteristics associated with the smaller 189.1-inch coupe body style.
Key Dimensions
| Dimension | Audi S8 | BMW M4 |
|---|---|---|
| Length | 209.5" | 189.1" |
| Width | 76.6" | 74.3" |
| Height | 58.5" | 55.0" |
| Wheelbase | 123.2" | 112.5" |
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 | — | ✓ |
| Driver Attention Alert | — | ✓ |
| Brake Drying | — | ✓ |
| Front Fixed Headrests | — | ✓ |
| Rear Fixed 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 | 473 hp @ 6250 rpm |
| Torque | 590 lb-ft | 406 lb-ft @ 2650 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 | 6-speed manual |
| Drivetrain Type | all wheel drive | rear wheel drive |
| [object Object] | ✓ | — |
| [object Object] | ✓ | — |
| Hill Descent Control | ✓ | — |
| 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. | 15.6 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 | — | ✓ |
| 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 | 464W |
| Speaker System | 17 | 16 |
| 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 |
| Subwoofer Count | — | 2 |
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. | 40.3 in. |
| Front Leg Room | 41.5 in. | 41.7 in. |
| Front Shoulder Room | 59.1 in. | 55.1 in. |
| Seat Material: Premium Leather | ✓ | ✓ |
| Front Seat Type: Sport | ✓ | ✓ |
| Driver Seat Power Adjustments | 18-way | 10-way |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | Power |
| Driver Seat Memory Settings | 2 | 2 |
| Passenger Seat Power Adjustments | 18-way | 10-way |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | Power |
| Driver Seat Heating | Multi-level | Multi-level |
| Passenger Seat Heating | Multi-level | Multi-level |
| Driver Seat Ventilation | ✓ | — |
| Passenger Seat Ventilation | ✓ | — |
| Seat Massage Function | ✓ | — |
| Driver Seat Thigh Extension | — | ✓ |
| Passenger Seat Thigh Extension | — | ✓ |
Rearseats
| Feature | Audi | BMW |
|---|---|---|
| Rear Head Room | 38.5 in. | 35.8 in. |
| Rear Leg Room | 44.3 in. | 34.7 in. |
| Rear Shoulder Room | 57.6 in. | 51.0 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 | 19 x 10.5 in |
| Tire Type | Performance | Performance |
| Tire Size | 265/35R21 | 285/35R Z |
| 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./ 30000 mi. | 3 yr./ 36000 mi. |
| Hybrid Component Warranty | — | 8 yr./ 100000 mi. |
Frequently Asked Questions
Common questions about comparing the 2026 Audi S8 and 2026 BMW M4.
How does the cargo capacity compare between the Audi S8 and the BMW M4?
The 2026 BMW M4 technically offers more storage with 15.5 cubic feet of cargo capacity, slightly beating the 2026 Audi S8's 12.5 cubic feet, which is surprising given the S8's larger sedan profile.
Which vehicle is faster in a straight line based on the specifications provided?
While the official 0-60 mph times aren't listed, the Audi S8 has a significant advantage with 563 horsepower compared to the M4's 473 horsepower, suggesting a higher potential top-end performance.
What is the primary drivetrain difference affecting handling?
The S8 uses an 8-speed automatic transmission with All-Wheel Drive for maximum traction and composure, whereas the M4 is strictly Rear-Wheel Drive paired with a classic 6-speed manual for a more traditional, driver-involved feel.
How does the fuel economy disparity affect daily usage?
The M4 is expected to offer substantially better efficiency, potentially achieving an 18 MPG difference in combined driving versus the S8's 18 combined MPG rating, requiring more frequent stops at the premium unleaded pump for the Audi.
Is the $48,700 price difference justified by the size difference?
The Audi S8 is noticeably larger, measuring 209.5 inches long and 76.6 inches wide, compared to the M4's 189.1-inch length, reflecting the S8's status as a full-size executive sedan.
Which car is the better choice for a driver who values manual control?
The 2026 BMW M4 is the only option here for manual transmission enthusiasts, as it exclusively features a 6-speed manual gearbox, while the S8 relies solely on an 8-speed automatic.
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