Aston Martin DBX vs Mercedes-Benz SL-Class

The Aston Martin DBX starts from $429,000 before on-road costs, while the Mercedes-Benz SL-Class opens at $239,900. That makes the Mercedes-Benz SL-Class the more affordable entry point by $189,100.

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 $471,900 and $263,890 respectively.

Over 5 years, the running costs favour the Mercedes-Benz SL-Class by roughly $7,410 in fuel alone.

ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.

The Aston Martin DBX features a 10.3-inch touchscreen paired with a 12.3-inch digital dash, while the Mercedes-Benz SL-Class gets a 11.9-inch display and 12.3-inch instruments. Apple CarPlay and Android Auto are standard across both.

The Aston Martin DBX stands out with Apple CarPlay, ventilated seats, power tailgate and Bowers & Wilkins audio that you will not find on the Mercedes-Benz SL-Class. The Mercedes-Benz SL-Class counters with wireless Apple CarPlay/Android Auto, wireless charging, Burmester audio and ambient lighting. Which feature set matters more depends on your daily routine and priorities.

Interior trim differs: the Aston Martin DBX gets leather upholstery while the Mercedes-Benz SL-Class offers nappa leather. Climate control is 3-zone in the Aston Martin DBX and 2-zone in the Mercedes-Benz SL-Class.

The Aston Martin DBX uses a Twin-turbo petrol producing 520kW and 900Nm of torque, sent through a automatic to a AWD layout. It covers the 0-100km/h sprint in 3.3 seconds.

The Mercedes-Benz SL-Class responds with a Petrol making 280kW and 480Nm, paired to a automatic driving the rear wheels. It gets to 100km/h in 4.9 seconds.

The Aston Martin DBX has the clear power advantage at 520kW vs 280kW. In the real-world sprint, the Aston Martin DBX is 1.6s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.

The Aston Martin DBX measures 5,039mm long on a 3,060mm wheelbase, 334mm longer than the Mercedes-Benz SL-Class at 4,705mm (2,700mm wheelbase). The longer wheelbase on the Aston Martin DBX generally means more rear legroom.

Boot space is 638L in the Aston Martin DBX and 213L in the Mercedes-Benz SL-Class, giving the Aston Martin DBX a 425L advantage. The Aston Martin DBX seats 5 vs 2.

Based on 15,000km of annual driving, fuel costs roughly $4,047/year for the Aston Martin DBX and $2,565/year for the Mercedes-Benz SL-Class. That is a $1,482 annual difference in favour of the Mercedes-Benz SL-Class.

Estimated annual total: $4,047 (Aston Martin DBX) vs $2,565 (Mercedes-Benz SL-Class). The Mercedes-Benz SL-Class saves you roughly $1,482 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 SL-Class). The Mercedes-Benz SL-Class has longer coverage.