Audi RS6 vs Mercedes-Benz AMG C63 S E Performance
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.
Audi RS6
From $241,500
Wagon
Petrol
463kW
11.8 L/100km
ANCAP: no data
565L
Mercedes-Benz AMG C63 S E Performance
From $189,900
Sedan
Hybrid
500kW
6.9 kWh/100km
5★ ANCAP
359L
Price Breakdown
The Audi RS6 starts from $241,500 before on-road costs, while the Mercedes-Benz AMG C63 S E Performance opens at $189,900. That makes the Mercedes-Benz AMG C63 S E Performance the more affordable entry point by $51,600.
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 $265,650 and $208,890 respectively.
The Mercedes-Benz AMG C63 S E Performance qualifies for FBT exemption as an electric vehicle, which can dramatically reduce the effective cost for novated lease buyers. The Audi RS6, as a petrol model, does not qualify.
Over 5 years, the running costs favour the Mercedes-Benz AMG C63 S E Performance by roughly $15,160 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
The Audi RS6 features a 10.1-inch touchscreen paired with a 12.3-inch digital dash, while the Mercedes-Benz AMG C63 S E Performance gets a 11.9-inch display and 12.3-inch instruments.
The Mercedes-Benz AMG C63 S E Performance counters with wireless Apple CarPlay/Android Auto, head-up display, panoramic roof, heated front seats, ventilated seats, power tailgate and Burmester audio that the Audi RS6 does not offer. Which feature set matters more depends on your daily routine and priorities.
Interior trim differs: the Audi RS6 gets leather upholstery while the Mercedes-Benz AMG C63 S E Performance offers nappa leather. Climate control is 3-zone in the Audi RS6 and 2-zone in the Mercedes-Benz AMG C63 S E Performance.
Drivetrain
The Audi RS6 uses a Petrol producing 463kW and 850Nm of torque, sent through a 8-speed tiptronic to a AWD layout. It covers the 0-100km/h sprint in 3.4 seconds.
The Mercedes-Benz AMG C63 S E Performance responds with a Hybrid making 500kW and 1020Nm, paired to a 9-speed auto driving all four wheels. It gets to 100km/h in 3.4 seconds.
The Mercedes-Benz AMG C63 S E Performance has the clear power advantage at 500kW vs 463kW. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Audi RS6 measures 4,995mm long on a 2,929mm wheelbase, 153mm longer than the Mercedes-Benz AMG C63 S E Performance at 4,842mm (2,865mm wheelbase). The longer wheelbase on the Audi RS6 generally means more rear legroom.
Boot space is 565L in the Audi RS6 and 359L in the Mercedes-Benz AMG C63 S E Performance, giving the Audi RS6 a 206L advantage.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $3,363/year for the Audi RS6 and $331/year for the Mercedes-Benz AMG C63 S E Performance. That is a $3,032 annual difference in favour of the Mercedes-Benz AMG C63 S E Performance.
Estimated annual total: $3,363 (Audi RS6) vs $331 (Mercedes-Benz AMG C63 S E Performance). The Mercedes-Benz AMG C63 S E Performance saves you roughly $3,032 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 5 years (Audi RS6) vs 5 years / 999,999km (Mercedes-Benz AMG C63 S E Performance). Both match on warranty length.
Who Should Buy Which?
Buy the Audi RS6 if: You need more boot space, or prefer Audi's approach to design and ownership experience.
Buy the Mercedes-Benz AMG C63 S E Performance if: You want the lower entry price, prioritise performance, want lower running costs, or prefer Mercedes-Benz's approach to design and ownership experience.
The Verdict
The Mercedes-Benz AMG C63 S E Performance takes 3 of 4 key spec categories and comes in at a lower price. The Mercedes-Benz AMG C63 S E Performance will save you roughly $3,032 a year in fuel. If boot space matters, the Audi RS6 has a clear edge. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Audi RS6 and Mercedes-Benz AMG C63 S E Performance?
The Mercedes-Benz AMG C63 S E Performance is the cheapest at $189,900 before on-road costs. That undercuts the Audi RS6 by $51,600.
Which is the most fuel-efficient?
The Mercedes-Benz AMG C63 S E Performance uses the least fuel at 6.9L/100km on the combined cycle.
Which is safest?
They are evenly matched — Mercedes-Benz AMG C63 S E Performance all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which has the most boot space?
The Audi RS6 has the largest boot at 565L.
Which is the most powerful?
The Mercedes-Benz AMG C63 S E Performance makes the most power at 500kW.
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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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