Porsche 911 vs Mercedes-Benz AMG GT
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.
Price Breakdown
The Porsche 911 starts from $248,400 before on-road costs, while the Mercedes-Benz AMG GT opens at $339,900. That makes the Porsche 911 the more affordable entry point by $91,500.
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 $273,240 and $373,890 respectively.
Over 5 years, the running costs favour the Porsche 911 by roughly $2,705 in fuel alone.
Safety Rundown
Both the Porsche 911 and Mercedes-Benz AMG GT hold a 5-star ANCAP safety rating.
Where the two diverge is in active safety technology. The Mercedes-Benz AMG GT packs more ADAS features with 6 out of 10 key systems fitted, compared to 0 in the Porsche 911.
Both include the essentials: a reversing camera.
Feature Showdown
Both come with modern infotainment systems.
The Mercedes-Benz AMG GT counters with Apple CarPlay, head-up display, panoramic roof, heated front seats, ventilated seats, power tailgate and Burmester audio that the Porsche 911 does not offer. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Porsche 911 uses a Petrol producing 290kW and 450Nm of torque, sent through a 8-speed pdk to a RWD layout. It covers the 0-100km/h sprint in 4.1 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 290kW. In the real-world sprint, the Mercedes-Benz AMG GT is 0.9s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Porsche 911 measures 4,533mm long on a 2,450mm wheelbase, 195mm shorter than the Mercedes-Benz AMG GT at 4,728mm (2,700mm wheelbase). The longer wheelbase on the Mercedes-Benz AMG GT generally means more rear legroom.
Boot space is 132L in the Porsche 911 and 321L in the Mercedes-Benz AMG GT, giving the Mercedes-Benz AMG GT a 189L advantage.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $3,164/year for the Porsche 911 and $3,705/year for the Mercedes-Benz AMG GT. That is a $541 annual difference in favour of the Porsche 911.
Estimated annual total: $3,164 (Porsche 911) vs $3,705 (Mercedes-Benz AMG GT). The Porsche 911 saves you roughly $541 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 3 years / 999,999km (Porsche 911) vs 5 years / 999,999km (Mercedes-Benz AMG GT). The Mercedes-Benz AMG GT has longer coverage.
Who Should Buy Which?
Buy the Porsche 911 if: You want the lower entry price, want lower running costs, or prefer Porsche's approach to design and ownership experience.
Buy the Mercedes-Benz AMG GT if: You prioritise performance, need more boot space, value a longer warranty, or prefer Mercedes-Benz's approach to design and ownership experience.
The Verdict
The Mercedes-Benz AMG GT takes 4 of 6 key spec categories. The Porsche 911 will save you roughly $541 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.
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.
Published by CarSorted Editorial Team · 20 April 2026
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