When Cadillac unveiled the CT6 in 2015, it promised that the executive sedan will also get a plug-in hybrid version. The more efficient and environmentally friendly model has just broken cover at the 2016 Los Angeles Auto Show, marking Caddy's entry in the full-size hybrid market alongside Mercedes-Benz and BMW.

Much like its competitors, the CT6 Plug-In Hybrid isn't all that different compared to its gasoline siblings inside and out, but stands out when it comes to what's under the shell. Specifically, the massive hybrid pairs the already familiar and efficient 2.0-liter, four-cylinder engine with a two-motor EVT system. The motors add 100 horsepower each, taking the total system output to 335 horses and 432 pound-feet of torque.

Together with a new electric variable transmission, the drivetrain enables the CT6 to travel for 400 miles on a single charge and a single tank of gasoline. This translates into 65 MPGe. The all-electric range is estimated at 30 miles, which might not sound like a lot, but it's more than what its competitors are capable of. When running on electricity alone, the car's top speed is limited to 78 mph. However, those figures increase to a more respectable 150 mph when the gasoline engine kicks in. Charging from 0 to 60 mph takes 5.2 seconds, yet another impressive figure relative to the competition.

How much does it cost, you ask? Well, it's common knowledge that hybrids are more expensive than their conventional siblings, so it's far from shocking that the CT6 Plug-In Hybrid starts from $75,095. That's a $10,530 premium over the CT6 Premium Luxury trim it is based on, but significantly lower than the competition.

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Why it matters

Speaking of the competition, the CT6 looks really good on paper. For starters its more powerful and delivers way more torque than the BMW 740e, which makes it nearly a half-second quicker from 0 to 60 mph. Compared to the Mercedes-Benz S550e, it lacks some 100 horsepower, but it's as fast as the German sedan on its way to 60 mph. It's worth noting that the Merc is the only car in here that has a V-6 and not a four-cylinder gas engine. The Caddy also wins the all-electric range contest with 30 miles versus 14 miles for both the Merc and the Bimmer on the EPA cycle. The same goes for MPGe, with 65 for the Caddy versus 64 for the BMW and only 58 for the Mercedes. Finally, the CT6 is also significantly more affordable than its rivals. While the Cadillac fetches $75,095 before options, the BMW 740e XDrive iPerformance retails from $89,100, while Mercedes-Benz S550e Plug-In Hybrid starts from a whopping $96,600.