Jaguar has announced a new 2.2-liter diesel engine capable of 187 horsepower and 332 pound-feet of torque that can also travel 52.3 miles per gallon in the combined European cycle as fitted to a prototype of its 2012 XF sedan. The engine will also have little trouble meeting Europe’s stringent CO2 regulations, as The Leaping Cat claims the engine only emits 149 g/km of CO2. @funkmasterflex