2017 Cadillac CT6 Plug-in Hybrid


The CT6 is widely viewed as one of the most handsome large cars on the market. “There's a lot to like about the CT6,” wrote Motor Trend. “The exterior and interior styling continue the increasingly sophisticated evolution of the Cadillac design language.”

Given the positive response to the CT6’s looks, it’s smart that Cadillac designers pretty much left the plug-in hybrid version unaltered. The only distinctions between the plug-in and its conventional stable mates are the driver’s side flap that provides access to the charging port, the car’s 18-inch wheels, and the 2.0E badge on the car’s trunk. The interior is almost nearly identical, except for its digital instrument cluster and smaller trunk—which was reduced in size to make some room for the car’s 18.4 kilowatt-hour battery pack.

The CT6 comes in a single trim level, which includes a panoramic sunroof, ventilated front seats, a rear-seat comfort package, night vision, and pretty much all of the available electronic active-safety systems you can get on a CT6. Cadillac says all those goodies in the $75,095 CT6 Plug-in Hybrid would put the price of a comparable BMW 740e plug-in around $100,000 and would require spending about $115,000 for the Mercedes 550e.


The rear-wheel-drive CT6 Plug-in Hybrid accelerates to 60 mph in about five seconds and provides a top speed of 150 miles per hour (or 78 mph when running purely on electricity). Total system power is 335 horsepower, with torque rated at a substantial 430 pound-feet of twist. The vehicle’s electric-variable transmission combines two 100-horsepower electric motors with a 2.0-liter turbocharged four-cylinder engine.

The 2018 CT6 plug-in offers drivers four modes for varying degrees of regenerative braking. The car handles well and is exceptionally quiet, although there is some debate among reviewers about the smoothness of the braking and acceleration. Some have reported some slightly disconcerting fluttering of the engine when the car transitions from electric to gas-powered driving, especially under brisk acceleration.


The Cadillac CT6 Plug-in Hybrid is rated to provide 31 miles of all-electric range from its 18.4-kWh battery pack—the same size battery that the lighter and more efficient Chevy Volt uses to grant 53 miles of all-electric range. The EPA says that the combined efficiency of gas and electricity is 62 miles per gallon equivalent, or 25 MPGe after the battery pack is depleted. Total range is 430 miles.

2017 Cadillac CT6 Plug-in Hybrid


Like the Chevy Volt, plugging the CT6 Plug-in Hybrid into a 240-volt supply of juice allows drivers to fully recharge the battery pack in less than five hours. Refueling from a standard 120v source will take closer to eight or nine hours.

Passenger/Cargo Room

The Cadillac CT6, a large and comfortable sedan, seats five passengers. The dashboard is clean and restrained with piano black trim, satin aluminum, and carbon fiber, and black-walnut wood. Other surfaces, such as the door pockets, can rely on Chevy-like plastics not necessarily befitting a luxury model.

2017 Cadillac CT6 Plug-in Hybrid

Trunk space is somewhat compromised by space taken up by the battery pack. The backseat offers two USB ports and a 12v socket for easy charging of devices.


The Cadillac CT6 Plug-in Hybrid has a single available trim that sells for $75,095. As stated above, you might consider this single trim as a fully loaded premium level with many generous appointments and a slew of high-tech features.

Comparisons with Similar Cars

The CT6 is not the most luxurious premium sedan, and might not match the refined quality of German competitors, like BMW and Mercedes. But its combination of simplicity, comfort, and power should put it on your shopping list—especially considering how its sticker price is well below plug-in hybrid vehicles like the BMW 740e and Mercedes-Benz S550e. Moreover, the CT6 Plug-in Hybrid offers about twice the electric range of those European models.

The down-market Chevrolet Volt provides 53 miles of all-electric range and much greater overall efficiency for less than half the price. But obviously, the Volt provide less room, luxury, and prestige.

Cadillac CT6 Plug-in Hybrid specifications

Availability: Now
Base MSRP: $75000
Est. tax credit: $7500
Technology: Plug-in Hybrid
Body type: Luxury
Seats: 5
EPA Range: 31 miles electric + gasoline
Battery size: 18 kWh
Charging rate: 3.3 kW

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