Porsche 911: Fast and Efficient

Porsche powertrain engineers have been hard at it for the development of what’s under the hoods—I mean decklids—of the new 911 Carrera 4 and 911 Targa 4, four-wheel drive vehicles.

Porsche powertrain engineers have been hard at it for the development of what’s under the hoods—I mean decklids—of the new 911 Carrera 4 and 911 Targa 4, four-wheel drive vehicles.

The cars, which will go on sale in Europe in January, feature 3.0-liter, bi-turbocharged six cylinder engines. The engines produce 365 hp and 331 lb-ft of torque.

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Then there are “S” models, which have modified turbo compressors, a specific exhaust system, and a differently tuned engine management system. These engines produce 414 hp and 368 lb-ft of torque.

Now it is worth noting that a 911 Carrera 4 with a PDK (dual-clutch transmission) and the Sport Chrono package (which allows driver-selectable setup of vehicle parameters and which includes a “Sport Response Button” that preconditions the engine for maximum acceleration for 20 seconds) can go from 0 to 100 km/h in 4.1 seconds (that’s 62 mph) and the S model can do it in 3.8 seconds. Opt for a cabriolet S or 911 Targa 4, and you’re talking 4.0 seconds.

OK. Going fast is one thing.

But even Porsche powertrain engineers have to pay attention to liters per kilometer the same way U.S. powertrain engineers have to eke out miles per gallon.

And that performance notwithstanding, based on the European cycle, the 911 Carrera 4 Cabriolet with PDK gets to 7.9 l/100 km (29.8 mpg) and the 911 Carrera S Cabriolet and 911 Targa 4S, each with PDK, 8.0 l/100 km (29.4 mpg).

Going fast is one thing.  Getting that fuel efficiency is, well, astonishing.