Edmunds senior writers Carlos Lago and Mark Takahashi test and compare the 2018 BMW M5 and the 2018 Mercedes-AMG E63 S. These two super sedans offer sports car athleticism from their 600-horsepower V8 engines and sharp handling, but they're also five-seat luxury sedans with large, usable trunks. While those attributes are exciting enough, both cars have advanced all-wheel-drive systems that bestow them with rapid acceleration. But when you want to show off, you can switch them to rear-wheel drive for unending displays of tire-shredding goodness. What's the best way to compare these two? A drag race and a show of sideways fun.
Q: What kind of engine and transmission do the 2018 BMW M5 and the 2018 Mercedes-AMG E63 S have?
A: The M5 has a twin-turbocharged 4.4-liter V8 (600 horsepower and 553 pound-feet of torque) and an eight-speed automatic. The E63 S uses a twin-turbocharged 4.0-liter V8 (603 hp and 627 lb-ft of torque) and a nine-speed automatic.
Q: How much does the 2018 BMW M5 and 2018 Mercedes-AMG E63 S cost?
A: The M5 starts at $104,595, including destination and gas-guzzler tax, while the E63 begins at $105,395, including destination. (It does not get a gas-guzzler tax.) Both vehicles in this video had a few options, such as carbon-ceramic brakes. The BMW came outfitted with 20-inch wheels and the Executive package, which added amenities such as ventilated and massaging seats. Its as-tested price was $129,795. The Mercedes included bucket-style seats with heating and ventilation, and it totaled $135,780.
Q: How fast are the 2018 BMW M5 and the 2018 Mercedes-AMG E63 S?
A: When it comes to acceleration, the difference between the two comes down to a difference that's so small that it disappears with rounding. During testing, the M5 reached 60 mph in 3.2 seconds (3.0 seconds with a 1-foot rollout, as on a drag strip) and clocked a quarter-mile time of 11.1 seconds at 126.2 mph. The E63 S passed 60 mph in 3.2 seconds (3.0 seconds with a 1-foot rollout, as on a drag strip) and passed the quarter-mile in 11.1 seconds at 124.1 mph.