Looking for uncompromising performance that also plays close to the vest? Look no further than the 2019 Mercedes-AMG E63 S sedan.
This high-performance uber-sedan looks remarkably similar to the rest of the E-Class lineup.
However, it's hiding a 4.0-liter biturbo V8 engine beneath its more-muscular hood.
That means 603 horsepower and 627 pound-feet of torque make their way to the 4Matic+ all-wheel-drive system via a nine-speed automatic gearbox.
The E63 S also features a hidden Drift Mode that locks the 4Matic system into a rear-drive configuration for sweet powerslides.
The suspension, wheels, tires and brakes have also been beefed up to match the performance of the engine room.
But this is no muscle meathead; the E63 S is available with the full complement of Benz's driver aid and safety technologies, including car-to-X communication for a bit of future-proof connectivity.
What surprised me most was how sedate, quiet and comfortable the E63 S could be when toggled into its Comfort mode. It's like two cars in one.
The E63 S is a modern day "Q car," or sleeper, hiding its high level of performance behind conservative style that flies under the radar (and the radar detectors).