Vehicle Overview
Key specifications and features at a glance
Year2020 - Present
Engine2999
Power280
FuelPetrol
TransmissionAutomatic
Seating5
Year2018 - Present
Engine3996
Power463
FuelPetrol
TransmissionAutomatic
Seating5
Detailed Specifications
Complete technical specifications comparison
Best comparable values are highlighted in green.
| Specification | S-Class S 450 | A6 RS 6 Avant |
|---|---|---|
| Engine Capacity | 2999 | 3996 |
| Engine Code | — | EA825 |
| Cylinder Configuration | Inline | V |
| Number of Cylinders | 6 | 8 |
| Aspiration | Turbocharged | Twin-turbocharged |
| Power | 280 | 463 |
| Torque | 560 | 850 |
| Top Speed | 250 | 280 |
| Drive Type | AWD | AWD |
| Fuel Economy Combined | 8.8 | 11.8 |
| Emission Standard | — | Euro 6 |
| Tyre Size | 255 / 40 R20 front; 285 / 35 R20 rear | 285 / 30R22 |
| Wheel Size | 20 | 22 |
| Number of Doors | 4 | 5 |
| Seating Capacity | 5 | 5 |
| Front Brakes | Ventilated disc | Ventilated disc |
| Rear Brakes | Ventilated disc | Ventilated disc |
| Front Suspension | Multi-link air suspension | Five-link independent |
| Rear Suspension | Multi-link air suspension | Five-link independent |
| Steering Type | Electric power steering | Electric power-assisted rack and pinion |
| Number of Airbags | 10 | 8 |
| Towing Capacity | 2100 | 2100 |
| Turning Circle | 12.8 | 12.1 |
Dimensions & Weight
Physical specifications and measurements
Best comparable values are highlighted in green.
| Dimension | S-Class S 450 | A6 RS 6 Avant |
|---|---|---|
| Fuel Tank Capacity | 76 | 73 |
| Length | 5180 | 4995 |
| Width | 1921 | 1951 |
| Height | 1503 | 1487 |
| Wheelbase | 3106 | 2929 |
| Ground Clearance | 130 | — |
| Kerb Weight | 2133 | 2090 |
| Boot Space | 550 | 548 |
Features Comparison
Standard and optional equipment comparison
Safety
| Feature | S-Class S 450 | A6 RS 6 Avant |
|---|---|---|
| Adaptive Cruise Control | ||
| Autonomous Emergency Braking | ||
| Lane Departure Warning | ||
| Lane Keep Assist | ||
| Blind Spot Monitoring | ||
| Rear Cross Traffic Alert | ||
| Traffic Sign Recognition | ||
| Driver Attention Monitor | ||
| Front Parking Sensors | ||
| Rear Parking Sensors | ||
| 360 Camera | ||
| Reverse Camera | ||
| Hill Start Assist | ||
| Tyre Pressure Monitoring System | ||
| Rear Occupant Alert |
Comfort
| Feature | S-Class S 450 | A6 RS 6 Avant |
|---|---|---|
| Keyless Entry | ||
| NFC Keyless Entry | ||
| Push Button Start | ||
| Dual-Zone Climate Control | ||
| Tri-Zone Climate Control | ||
| Heated Front Seats | ||
| Ventilated Front Seats | ||
| Heated Steering Wheel | ||
| Power Tailgate | ||
| Remote Start | ||
| Power Driver Seat | ||
| Power Passenger Seat | ||
| Memory Seats | ||
| Auto Dimming Mirror | ||
| Rain Sensing Wipers | ||
| Adaptive Headlights |
Interior Exterior
| Feature | S-Class S 450 | A6 RS 6 Avant |
|---|---|---|
| Leather Seats | ||
| Fabric Seats | ||
| Ambient Lighting | ||
| Sunroof | ||
| Panoramic Roof | ||
| LED Headlights | ||
| Matrix LED Headlights | ||
| Daytime Running Lights | ||
| Alloy Wheels | ||
| Roof Rails | ||
| Rear Privacy Glass | ||
| Power Folding Mirrors |
Technology
| Feature | S-Class S 450 | A6 RS 6 Avant |
|---|---|---|
| Touchscreen Display | ||
| Digital Instrument Cluster | ||
| Apple CarPlay | ||
| Android Auto | ||
| Wireless Apple CarPlay | ||
| Wireless Android Auto | ||
| Wireless Phone Charging | ||
| Built-in Navigation | ||
| Premium Audio System | ||
| Head-Up Display | ||
| USB-C Ports | ||
| Bluetooth Connectivity | ||
| Voice Control | ||
| Connected Car App |
Pros & Cons
Strengths and weaknesses of each vehicle
Mercedes-Benz S-Class S 450
Pros
- +Exceptional ride comfort
- +Refined six-cylinder performance
- +Spacious luxury cabin
- +Advanced driver assistance
- +Strong long-distance ability
Cons
- −Very high purchase price
- −Large urban footprint
- −Expensive tyres and servicing
- −Complex infotainment controls
- −High insurance costs
Audi A6 RS 6 Avant
Pros
- +Supercar-level 463 kW performance
- +Practical wagon body
- +Strong quattro traction
- +Useful 548 litre boot
- +Exceptional overtaking performance
Cons
- −Very high purchase price
- −Heavy fuel consumption
- −Expensive tyres and brakes
- −High insurance costs
- −Wide body suits larger roads
Which one should you buy?
Best for Performance: Audi A6 RS 6 Avant
System power around 463 kW supports a solid performance score.
Best Overall: Audi A6 RS 6 Avant
Across performance, value, efficiency, and practicality, this variant shows a balanced overall profile.
Our Recommendation
Choose Mercedes-Benz S-Class S 450 if: You prioritise performance and responsive power.
Choose Audi A6 RS 6 Avant if: You prioritise performance and responsive power.
Bottom Line: Audi A6 RS 6 Avant leads on performance.
Ready to Find Your Perfect Vehicle?
Browse thousands of listings or compare more vehicles to make the best decision