Mercedes-Benz S-Class vs Porsche 911

The Mercedes-Benz S-Class starts from $278,900 before on-road costs, while the Porsche 911 opens at $296,700. That makes the Mercedes-Benz S-Class the more affordable entry point by $17,800.

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 $306,790 and $326,370 respectively.

Over 5 years, the running costs favour the Mercedes-Benz S-Class by roughly $1,425 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 Mercedes-Benz S-Class features a 12.8-inch touchscreen paired with a 12.3-inch digital dash, while the Porsche 911 gets a 10.9-inch display and 12.6-inch instruments.

The Mercedes-Benz S-Class stands out with wireless Apple CarPlay/Android Auto, head-up display, wireless charging, panoramic roof, heated front seats, ventilated seats, Burmester audio and ambient lighting that you will not find on the Porsche 911. Which feature set matters more depends on your daily routine and priorities.

Interior trim differs: the Mercedes-Benz S-Class gets nappa leather upholstery while the Porsche 911 offers leather. Climate control is 4-zone in the Mercedes-Benz S-Class and 2-zone in the Porsche 911.

The Mercedes-Benz S-Class uses a Petrol producing 280kW and 500Nm of torque, sent through a automatic to a AWD layout. It covers the 0-100km/h sprint in 4.9 seconds.

The Porsche 911 responds with a Petrol making 290kW and 450Nm, paired to a 8-speed pdk driving the rear wheels. It gets to 100km/h in 4.1 seconds.

The Porsche 911 has the clear power advantage at 290kW vs 280kW. In the real-world sprint, the Porsche 911 is 0.8s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.

The Mercedes-Benz S-Class measures 5,179mm long on a 3,106mm wheelbase, 646mm longer than the Porsche 911 at 4,533mm (2,450mm wheelbase). The longer wheelbase on the Mercedes-Benz S-Class generally means more rear legroom.

Boot space is 510L in the Mercedes-Benz S-Class and 132L in the Porsche 911, giving the Mercedes-Benz S-Class a 378L advantage. The Mercedes-Benz S-Class seats 5 vs 4.

Based on 15,000km of annual driving, fuel costs roughly $2,394/year for the Mercedes-Benz S-Class and $2,679/year for the Porsche 911. That is a $285 annual difference in favour of the Mercedes-Benz S-Class.

Estimated annual total: $2,394 (Mercedes-Benz S-Class) vs $2,679 (Porsche 911). The Mercedes-Benz S-Class saves you roughly $285 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.

Warranty: 5 years / 999,999km (Mercedes-Benz S-Class) vs 3 years / 999,999km (Porsche 911). The Mercedes-Benz S-Class has longer coverage.