2026 Mercedes-AMG SL63 S E Performance: brutal plug-in hybrid power at a steep price

The 2026 Mercedes-AMG SL63 S E Performance is a plug-in hybrid grand tourer combining a petrol V8 with an electric motor to produce impressive output figures. The car delivers serious performance numbers and a dramatic exhaust note, but comes at a significant financial cost. The test highlights both the powertrain's strengths and the trade-offs inherent in a heavy hybrid GT car.