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Porsche to Unveil New 911 With More-Efficient Boxer Engine

Porsche to Unveil New 911 With More-Efficient Boxer Engine

The Carrera S model’s 3.8L boxer engine is rated at 400 hp, up 15 hp, but still delivers fuel economy of 27.0 mpg.

Porsche’s new 911 Carrera, set to bow at September’s Frankfurt auto show, is the German auto maker’s first sports car to break the 200 g/km barrier in carbon-dioxide emissions.

The improved fuel efficiency comes via a new 3.4L 6-cyl. boxer engine that cranks out 350 hp but is rated at 28.7 mpg (8.2 L/100 km), a 16% gain from the outgoing model. The performance equates to 194 g/km in CO2 emissions, the auto maker says.

The Carrera S model also accents fuel efficiency. While output of its 3.8L boxer engine is rated at 400 hp, up 15 hp, it delivers 27.0 mpg (8.7 L/100 km) when mated to the optional PDK automatic transmission, a 14% improvement from the previous-generation model. CO2 emissions are rated at 205 g/km.

Porsche says the car features an all-new body that combines steel and aluminum to cut weight 99 lbs. (45 kg).

Other additions include the world’s first 7-speed manual transmission, a stop/start system and electro-mechanical power steering.

Joining the 911 on Porsche’s Frankfurt stand will be the Panamera diesel model.

The auto maker says the 250-hp V-6 diesel boosts the luxury sedan’s fuel economy to 37.3 mpg (6.3 L/100 km) and provides a range of more than 746 miles (1,200 km) between fill-ups.