The Corvette ZR1X is a masterclass in the execution of combining an internal combustion engine with an electrical propulsion system.
The result is both refined — that is, in the context of vehicles with 1,250 hp where as you activate the ignition button, you can feel and hear the potential power — and capable, such that it is unquestionably deserving of being among the best-of-the-best in the 2026 Wards 10 Best Engines & Propulsion Systems.
Yes, the ZR1X is a hybrid. But if one’s mental definition of hybrid has something more to do with frugality than performance, then this vehicle will change the way you think.
It is one of two hybrids in all of General Motors’ U.S. lineup. Interestingly enough, the other hybrid is the recently introduced Corvette Grand Sport X. It produces 721 hp. Were it not for the remarkable ZR1X, that Grand Sport X would be more-than impressive. The Corvette team clearly knows how to make the most of electrification.
Inside the ZR1X propulsion system
For the ZR1X propulsion system, the Corvette team went all in.
That is, here’s a hybrid that turns 0 to 60 mph in under two seconds and can make the quarter mile in under nine seconds.
And to be fair to those who associate hybrids with fuel economy, the ZR1X provides an EPA estimated 12 mpg city/19 mpg highway/14 mpg combined, so what it does with 91 octane fuel is certainly respectable. Besides, those who are paying a starting price of $220,995 likely don’t mind pumping in the premium because of what it can do when they get it on the streets — or better, on a track.
Notably, the twin-turbo LT7 5.5L DOHC V-8 that provides the primary propulsion for the ZR1X is a 2025 Wards 10 Best Engines & Propulsion Systems winner. It also heir to the LT2 engine in the Corvette E-Ray and the LT6 in the Corvette Z06, also winners, which means Corvette mills have been recipients of Wards 10 Best trophies four years running.
It is also notable that the E-Ray, which was introduced in model year 2024, was the first hybrid AWD Corvette — like the ZR1X — and the learnings were clearly implemented on the ZR1X.
The ZR1X has a robust Tremec 8-speed dual-clutch transmission that takes the power from the V-8 and sends it to the rear axle. The V-8 thrust is augmented by an electric motor on the front axle that provides up to 186 hp and 145 lb-ft of torque. It is powered by a 1.9-kWh lithium-ion battery, which is charged via regenerative operation of the front drive unit (i.e., when braking, the unit operates as a generator rather than as a motor).
This combo provides the AWD capability and the system output of 1,250 hp and 973 lb-ft of torque.
The engine and the motor are not physically connected and operate independently or in conjunction, as determined by the engine controls.
That is, when creeping through a Costco parking lot (there is a cargo capacity of 9.1 cubic feet) the front drive unit is likely powering the ZR1X by itself — the motor is there for speed, not energy frugality. Meanwhile, the engine is likely solo running when cruising on the highway. Yet they are both engaged when getting on the accelerator, as they are when the stability provided by AWD is required.
A high-voltage inverter is part of the package. It facilitates short bursts of high current like in race vehicles: there is a push-to-pass feature in the ZR1X. However, when hitting 160 mph, the front motor disconnects. Apparently, this is for high-speed efficiency. This is something the Wards 10 Best judges were not able to determine on I-696.
But what they did discover was the responsiveness of the throttle was enough to induce noticeable G-forces on municipal motorways.
Wards 10 Best Engines & Propulsion Systems Judge Bob Gritzinger described the driving experience best:
“The Corvette ZR1X is truly a rocket ship for the road, with a propulsion system capable of producing acceleration and G-forces usually reserved for fighter pilots and astronauts. And yet it can settle down and seem as docile as any hybrid when loping along at highway speed or quietly motoring through a school zone,” he said.
The 5.5L small block and the electric motor are home-grown technology, with the engine being assembled at the Bowling Green Assembly Performance Build Center in Kentucky. Bowling Green has been the exclusive source for Corvettes since 1981. The front-axle drive unit is made at the GM Brownstown Battery Assembly Plant in Michigan.
