Audi S5 vs Mercedes-Benz E-Class

The Audi S5 starts from $99,900 before on-road costs, while the Mercedes-Benz E-Class opens at $105,900. That makes the Audi S5 the more affordable entry point by $6,000.

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 $109,890 and $116,490 respectively.

Over 5 years, the running costs are nearly identical since both have similar efficiency.

Both the Audi S5 and Mercedes-Benz E-Class hold a 5-star ANCAP safety rating. Adult occupant protection scored 87% for the Audi S5 and 92% for the Mercedes-Benz E-Class.

Where the two diverge is in active safety technology. We can confirm 8 of 10 key ADAS systems on the Audi S5, against 6 on the Mercedes-Benz E-Class.

Both include the essentials: autonomous emergency braking, lane keep assist, adaptive cruise control, a reversing camera. Airbag count is 7 in the Audi S5 and 9 in the Mercedes-Benz E-Class.

The Audi S5 features a 14.5-inch touchscreen paired with a 11.9-inch digital dash, while the Mercedes-Benz E-Class gets a 14.4-inch display and 12.3-inch instruments. Apple CarPlay and Android Auto are standard across both.

The Audi S5 stands out with ventilated seats, power tailgate and Bang & Olufsen audio — features our data doesn't list for the Mercedes-Benz E-Class. The Mercedes-Benz E-Class counters with wireless charging and panoramic roof. Which feature set matters more depends on your daily routine and priorities.

Interior trim differs: the Audi S5 gets leather upholstery while the Mercedes-Benz E-Class offers synthetic leather. Climate control is 3-zone in the Audi S5 and 2-zone in the Mercedes-Benz E-Class.

The Audi S5 uses a Petrol MHEV producing 270kW and 550Nm of torque, sent through a s tronic to a AWD layout. It covers the 0-100km/h sprint in 4.5 seconds.

The Mercedes-Benz E-Class responds with a Petrol making 150kW and 320Nm, paired to a automatic driving the rear wheels. It gets to 100km/h in 8.3 seconds.

The Audi S5 has the clear power advantage at 270kW vs 150kW. In the 0-100 sprint (manufacturer-claimed), the Audi S5 is 3.8s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.

The Audi S5 measures 4,829mm long on a 2,892mm wheelbase, 120mm shorter than the Mercedes-Benz E-Class at 4,949mm (2,961mm wheelbase). The longer wheelbase on the Mercedes-Benz E-Class generally means more rear legroom.

Boot space is 445L in the Audi S5 and 540L in the Mercedes-Benz E-Class, giving the Mercedes-Benz E-Class a 95L advantage.

For towing, the Mercedes-Benz E-Class leads with a 2,100kg braked capacity vs 1,800kg. That 300kg difference matters if you regularly hitch up.

Based on 15,000km of annual driving, fuel costs roughly $2,024/year for the Audi S5 and $2,052/year for the Mercedes-Benz E-Class. That is a $28 annual difference in favour of the Audi S5.

Warranty: 5 years / 999,999km (Audi S5) vs 5 years / 999,999km (Mercedes-Benz E-Class). Both match on warranty length.