Vehicle Overview
Key specifications and features at a glance
Year2018 - Present
Engine2989
Power270
FuelDiesel
TransmissionAutomatic
Seating5
Year2019 - Present
Engine3996
Power441
FuelPetrol
TransmissionAutomatic
Seating5
Detailed Specifications
Complete technical specifications comparison
Best comparable values are highlighted in green.
| Specification | G-Class G 450 d | RS Q8 |
|---|---|---|
| Engine Capacity | 2989 | 3996 |
| Engine Code | OM656 | EA825 |
| Cylinder Configuration | Inline | V8 |
| Number of Cylinders | 6 | 8 |
| Aspiration | Turbocharged | Twin-turbocharged |
| Power | 270 | 441 |
| Torque | 750 | 800 |
| Top Speed | 210 | 250 |
| Drive Type | 4WD | AWD |
| Fuel Economy Combined | 8.7 | 12.3 |
| Emission Standard | Euro 6 | Euro 6e |
| Tyre Size | 265 / 60 R18 | 295 / 35 R23 |
| Wheel Size | 18 | 23 |
| Number of Doors | 5 | 5 |
| Seating Capacity | 5 | 5 |
| Front Brakes | Ventilated discs | Ventilated disc |
| Rear Brakes | Ventilated discs | Ventilated disc |
| Front Suspension | Independent double wishbone with adaptive damping | Multi-link adaptive air suspension |
| Rear Suspension | Rigid axle with adaptive damping | Multi-link adaptive air suspension |
| Steering Type | Electric rack and pinion | Electric power steering |
| Number of Airbags | 9 | 8 |
| Towing Capacity | 3500 | 3500 |
| Turning Circle | 13.6 | — |
Dimensions & Weight
Physical specifications and measurements
Best comparable values are highlighted in green.
| Dimension | G-Class G 450 d | RS Q8 |
|---|---|---|
| Fuel Tank Capacity | 100 | 85 |
| Length | 4825 | 5022 |
| Width | 1931 | 2007 |
| Height | 1973 | 1699 |
| Wheelbase | 2890 | 2998 |
| Ground Clearance | 241 | — |
| Kerb Weight | 2555 | 2543 |
| Boot Space | 640 | 605 |
Features Comparison
Standard and optional equipment comparison
Safety
| Feature | G-Class G 450 d | RS Q8 |
|---|---|---|
| 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 | G-Class G 450 d | RS Q8 |
|---|---|---|
| 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 | G-Class G 450 d | RS Q8 |
|---|---|---|
| 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 | G-Class G 450 d | RS Q8 |
|---|---|---|
| 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 |
Diesel Utility
| Feature | G-Class G 450 d | RS Q8 |
|---|---|---|
| Trailer Sway Control | ||
| Side Steps | ||
| Tow Bar Prep |
Pros & Cons
Strengths and weaknesses of each vehicle
Mercedes-Benz G-Class G 450 d
Pros
- +Powerful and efficient six-cylinder diesel
- +Excellent 3500 kg towing capacity
- +Three locking differentials and low range
- +Premium five-seat cabin
- +Strong long-distance touring ability
Cons
- −Very high purchase price
- −Large dimensions for urban parking
- −Heavy kerb weight
- −Expensive servicing and tyres
- −No independent ANCAP rating
Audi RS Q8 RS Q8
Pros
- +Supercar-level 441 kW performance
- +Practical 605-litre boot
- +Excellent 3500 kg towing capacity
- +Standard quattro all-wheel drive
- +Comfortable adaptive air suspension
Cons
- −Very high purchase price
- −Heavy fuel consumption
- −Large size for city parking
- −Expensive 23-inch tyres
- −High running and insurance costs
Which one should you buy?
Best for Performance: Audi RS Q8 RS Q8
System power around 441 kW supports a solid performance score.
Best Overall: Audi RS Q8 RS Q8
Across performance, value, efficiency, and practicality, this variant shows a balanced overall profile.
Our Recommendation
Choose Mercedes-Benz G-Class G 450 d if: You prioritise performance and responsive power.
Choose Audi RS Q8 RS Q8 if: You prioritise performance and responsive power.
Bottom Line: Audi RS Q8 RS Q8 leads on performance.
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