Redesigned 2014 Cadillac CTS Snarls With New 420-HP Twin-Turbo V6 | Edmunds

Redesigned 2014 Cadillac CTS Snarls With New 420-HP Twin-Turbo V6

Just the Facts:
  • The 2014 Cadillac CTS will launch later this year with an all-new, twin-turbocharged 3.6-liter V6.
  • The new V6 is unexpectedly stout, developing 420 horsepower and 430 pound-feet of torque.
  • The new-generation 2014 CTS also will offer a 2-liter turbocharged four-cylinder and the current CTS's 3.6-liter V6.

DETROIT — The new-generation 2014 Cadillac CTS hasn't been seen yet — General Motors Co.'s premium-vehicle division will unveil it at the 2013 New York Auto Show next week — but Cadillac today announced its totally redesigned midsize sedan will come to market with a rollicking new engine: a 3.6-liter twin-turbo V6 that generates an SAE-certified 420 horsepower and 430 pound-feet of torque.

And no, this engine and its 420 hp, long speculated by the industry gossip mill, is not for the CTS-V. Instead, it will put Cadillac firmly ahead of forced-induction six-cylinder midsize models from direct rivals such as the Audi A6 and BMW 5 Series.

If a V8-toting, V-Series version of the new-age CTS is in the cards, Cadillac officials said nothing about it today, instead keeping the focus on the new and most powerful V6 GM has ever produced. The company said the twin-turbo V6, a "comprehensive upgrade" of the current 3.6-liter, also is the most powerful six-cylinder in the midsize luxury segment. The new engine also will be available in the 2014 Cadillac XTS full-size sedan.

Cadillac said the all-aluminum twin-turbo V6 has its own specific block and head castings, reinforced connecting rods and an all-new design for its direct injection, among other features that differentiate it from the CTS's conventional 3.6-liter V6. The engine also borrowed its close-coupled "twin-brick" intercooler design from the current CTS-V's supercharged LSA 6.2-liter pushrod V8. The two intake circuits converge in a single, centrally located throttle body, helping to improve throttle response, engineers said.

The new twin-turbo V6 has a modest 10.2:1 compression ratio but will require premium unleaded, Cadillac said. Redline is 6,500 rpm. The engine develops 99 hp more than the projected 321 hp from the 2014 CTS's normally-aspirated 3.6-liter, but is 136 hp in arrears of the thumping supercharged 6.2-liter V8 of the current CTS-V, seemingly still leaving plenty of space for a V-Series powertrain for the new-generation CTS.

Backing the new twin-turbo V6 is an eight-speed, paddle-shifted, torque-converter automatic, GM's first confirmation of an eight-speeder for a production model. Unusually for GM, however, it is not a GM-made transmission; the unit is supplied by Japan's Aisin. GM's own eight-speed automatic, likely to be derived from a joint-venture development program with Ford, is not yet ready.

Along with the new twin-turbo V6, Cadillac said the 2014 CTS also will offer the existing 2.0-liter turbocharged four-cylinder (272 hp) introduced in the 2013 ATS and the normally aspirated 3.6-liter V6 (321 hp). The 2.0-liter will be hooked to GM's six-speed automatic with paddle-shift ability while the normally aspirated 3.6-liter V6 will get upgraded to the eight-speed automatic; rear drive is standard and all-wheel drive available. So what's missing here is a manual transmission for any driveline configuration and all-wheel-drive for the twin-turbo CTS.

To accompany power and torque figures for each of the 2014 CTS's three engines (preliminary for the 2.0-liter and 3.6-liter), Cadillac even went so far as to offer fuel economy projections: the new twin-turbo/eight-speed auto is expected to yield 17 mpg in the city and 25 mpg on the highway. The 2.0-liter, rear-drive CTS manages 19/30 in rear-drive configuration and 18/28 for the AWD model and it's 19/28 for the rear-drive 3.6-liter and 18/27 for AWD.

Edmunds says: With the smoking new twin-turbo V6, the 2014 Cadillac CTS is laying down the law to its European rivals.

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