Mercedes-Benz AMG GT vs Aston Martin DB12
A detailed look at how two of Australia's most popular Coupes 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.
Mercedes-Benz AMG GT
From $339,900
Coupe
Petrol
430kW
13 L/100km
5★ ANCAP
321L
Aston Martin DB12
From $455,000
Coupe
Twin-turbo petrol
500kW
12.2 L/100km
ANCAP: no data
262L
Price Breakdown
The Mercedes-Benz AMG GT starts from $339,900 before on-road costs, while the Aston Martin DB12 opens at $455,000. That makes the Mercedes-Benz AMG GT the more affordable entry point by $115,100.
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 $373,890 and $500,500 respectively.
Over 5 years, the running costs favour the Aston Martin DB12 by roughly $1,140 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 Mercedes-Benz AMG GT uses a Petrol producing 430kW and 700Nm of torque, sent through a 9-speed auto to a AWD layout. It covers the 0-100km/h sprint in 3.2 seconds.
The Aston Martin DB12 responds with a Twin-turbo petrol making 500kW and 800Nm, paired to a automatic driving the rear wheels. It gets to 100km/h in 3.6 seconds.
The Aston Martin DB12 has the clear power advantage at 500kW vs 430kW. In the real-world sprint, the Mercedes-Benz AMG GT is 0.4s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Mercedes-Benz AMG GT measures 4,728mm long on a 2,700mm wheelbase, 3mm longer than the Aston Martin DB12 at 4,725mm (2,805mm wheelbase). The longer wheelbase on the Aston Martin DB12 generally means more rear legroom.
Boot space is 321L in the Mercedes-Benz AMG GT and 262L in the Aston Martin DB12, giving the Mercedes-Benz AMG GT a 59L advantage.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $3,705/year for the Mercedes-Benz AMG GT and $3,477/year for the Aston Martin DB12. That is a $228 annual difference in favour of the Aston Martin DB12.
Estimated annual total: $3,705 (Mercedes-Benz AMG GT) vs $3,477 (Aston Martin DB12). The Aston Martin DB12 saves you roughly $228 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 5 years / 999,999km (Mercedes-Benz AMG GT) vs 3 years (Aston Martin DB12). The Mercedes-Benz AMG GT has longer coverage.
Who Should Buy Which?
Buy the Mercedes-Benz AMG GT if: You want the lower entry price, need more boot space, value a longer warranty, or prefer Mercedes-Benz's approach to design and ownership experience.
Buy the Aston Martin DB12 if: You prioritise performance, want lower running costs, or prefer Aston Martin's approach to design and ownership experience.
The Verdict
The Mercedes-Benz AMG GT takes 4 of 6 key spec categories and comes in at a lower price. The Aston Martin DB12 will save you roughly $228 a year in fuel. If boot space matters, the Mercedes-Benz AMG GT 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, Mercedes-Benz AMG GT and Aston Martin DB12?
The Mercedes-Benz AMG GT is the cheapest at $339,900 before on-road costs. That undercuts the Aston Martin DB12 by $115,100.
Which is the most fuel-efficient?
The Aston Martin DB12 uses the least fuel at 12.2L/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 Mercedes-Benz AMG GT has the largest boot at 321L.
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 Aston Martin DB12 makes the most power at 500kW. 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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