Aston Martin DBX vs Mercedes-Benz AMG GT
A detailed look at how two of Australia's most popular cars compare on price, running costs, safety, and everyday livability.
Specifications and pricing correct at time of publishing. Prices are RRP before on-road costs unless stated otherwise. Always confirm with the manufacturer or dealer before purchasing.
Aston Martin DBX
From $390,000
SUV
Twin-turbo petrol
405kW
14.3 L/100km
ANCAP: no data
632L
Mercedes-Benz AMG GT
From $339,900
Coupe
Petrol
430kW
13 L/100km
5★ ANCAP
321L
Price Breakdown
The Aston Martin DBX starts from $390,000 before on-road costs, while the Mercedes-Benz AMG GT opens at $339,900. That makes the Mercedes-Benz AMG GT the more affordable entry point by $50,100.
Once you factor in stamp duty, registration, CTP insurance, and dealer delivery, expect to add roughly 8-12% on top of the RRP depending on your state. That puts estimated driveaway prices in the ballpark of $429,000 and $373,890 respectively.
Over 5 years, the running costs favour the Mercedes-Benz AMG GT by roughly $1,855 in fuel alone.
Safety Rundown
ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
Drivetrain
The Aston Martin DBX uses a Twin-turbo petrol producing 405kW and 700Nm of torque, sent through a automatic to a AWD layout. It covers the 0-100km/h sprint in 4.5 seconds.
The Mercedes-Benz AMG GT responds with a Petrol making 430kW and 700Nm, paired to a 9-speed auto driving all four wheels. It gets to 100km/h in 3.2 seconds.
The Mercedes-Benz AMG GT has the clear power advantage at 430kW vs 405kW. In the real-world sprint, the Mercedes-Benz AMG GT is 1.3s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Aston Martin DBX measures 5,039mm long on a 3,060mm wheelbase, 311mm longer than the Mercedes-Benz AMG GT at 4,728mm (2,700mm wheelbase). The longer wheelbase on the Aston Martin DBX generally means more rear legroom.
Boot space is 632L in the Aston Martin DBX and 321L in the Mercedes-Benz AMG GT, giving the Aston Martin DBX a 311L advantage. The Aston Martin DBX seats 5 vs 4.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $4,076/year for the Aston Martin DBX and $3,705/year for the Mercedes-Benz AMG GT. That is a $371 annual difference in favour of the Mercedes-Benz AMG GT.
Estimated annual total: $4,076 (Aston Martin DBX) vs $3,705 (Mercedes-Benz AMG GT). The Mercedes-Benz AMG GT saves you roughly $371 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 3 years (Aston Martin DBX) vs 5 years / 999,999km (Mercedes-Benz AMG GT). The Mercedes-Benz AMG GT has longer coverage.
Who Should Buy Which?
Buy the Aston Martin DBX if: You need more boot space, or prefer Aston Martin's approach to design and ownership experience.
Buy the Mercedes-Benz AMG GT if: You want the lower entry price, prioritise performance, want lower running costs, value a longer warranty, or prefer Mercedes-Benz's approach to design and ownership experience.
The Verdict
The Mercedes-Benz AMG GT takes 5 of 6 key spec categories and comes in at a lower price. The Mercedes-Benz AMG GT will save you roughly $371 a year in fuel. If boot space matters, the Aston Martin DBX has a clear edge. The Mercedes-Benz AMG GT adds peace of mind with a longer 5-year warranty. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Aston Martin DBX and Mercedes-Benz AMG GT?
The Mercedes-Benz AMG GT is the cheapest at $339,900 before on-road costs. That undercuts the Aston Martin DBX by $50,100.
Which is the most fuel-efficient?
The Mercedes-Benz AMG GT uses the least fuel at 13L/100km on the combined cycle.
Which is safest?
They are evenly matched — Mercedes-Benz AMG GT all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which has the most boot space?
The Aston Martin DBX has the largest boot at 632L.
Which can tow the most?
The Aston Martin DBX has the highest braked towing capacity at 2,700kg.
Which has the best warranty?
The Mercedes-Benz AMG GT has the longest warranty at 5 years / 1000k km.
Which is the most powerful?
The Mercedes-Benz AMG GT makes the most power at 430kW. The Mercedes-Benz AMG GT is quickest to 100km/h in 3.2s.
Disclaimer: All information in this comparison was believed to be correct at the time of publishing (20 April 2026). Prices are manufacturer recommended retail prices (RRP) and may vary by state, dealer, and options. Driveaway costs include estimated on-road costs for Victoria. Fuel economy figures are WLTP/ADR combined cycle. Specifications can change without notice. Always verify with the manufacturer before making a purchase decision. CarSorted does not accept payment for recommendations.
Auto-generated from CarSorted's specification data · 20 April 2026
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