Even on our test car's optional $3250 22-inch wheels (21s are standard), the GLE63 S deftly soaks up midcorner bumps and undulations without feeling brittle. We smell a comparison test brewing.ĪMG has also fitted its 48-volt Active Ride Control anti-roll system, which helps keep body roll tightly in check in the more aggressive settings. We've yet to test the updated 2020 BMW X5 M, which can pack up to 617 horsepower in Competition trim, but we expect it to make similar performance gains as the AMG and hew closely to the GLE63 S's times. The new AMG's acceleration figures also just edge out those of the latest 541-hp Porsche Cayenne Turbo, although the 670-hp Cayenne Turbo S E-Hybrid beats it by a couple of tenths to 60 mph and stomps it down the quarter-mile by nearly a half-second and 4 mph. Compared to the last GLE63 S we tested, which weighed 253 pounds less, the new model is 0.3-second quicker to 60 and 0.2-second and 2 mph quicker through the quarter. At the test track, our test car needed just 3.4 seconds to reach 60 mph and it blitzed the quarter-mile in 11.9 seconds at 117 mph, making it one of the quickest mid-sized high-performance SUVs we've evaluated.
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Michael Simari | Car and Driver Pace and Spaceĭespite its bulk, the 5568-pound GLE63 S thunders out of corners with authority, thanks to a standard limited-slip rear differential and a rear-biased all-wheel-drive system that never sends more than half the engine's torque to the front wheels.
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Activating the nine-speed's manual mode remedies this by allowing you to hold gears to the engine's 7100-rpm rev limiter, but downshifts are still lazier than we'd like. Even in its most aggressive Race drive mode, the gearbox tends to upshift entering corners and is often caught napping in too high a ratio. The somewhat lazy calibration of the nine-speed transmission in the GLE63 S can be frustrating on challenging roads. Although the system's torque does occasionally overlap with the V-8's, the motor's boost never exceeds the engine's max output. But, let's be clear: It does not increase the engine's output. The additional electrons also make for one of the quickest and seamless engine stop-start systems we've experienced. That extra power is administered with silky refinement just off idle, during gear changes, and in a handful of other situations when the V-8 might pause while its turbos spool up. Mercedes Unveils AMG63 Versions of GLS, GLE SUVsĪlong with powering the V-8's accessories, including the electric air-conditioning compressor and electric water pump, the motor-generator can briefly kick in up to 21 horsepower and 184 pound-feet of torque to reduce the engine's lag and, in theory, improve its fuel economy.
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