Porsche AG has informed the German government of a possible problem with its emissions testing numbers.
First reported by German publication Der Spiegel, the mistake is related to discrepancies in wind resistance values during Porsche emissions testing. The resulting 2016 and 2017 Porsche 911 fuel mileage ratings may be off as a result.
“The company is continuing its internal investigations in close consultation with the authorities,” Porsche said. The problem would not affect the vehicle’s safety or performance.
Emissions testing happens in a lab, but automakers simulate the impact of wind on fuel consumption and take the number into account when calculating fuel economy. Miscalculating can result in understated fuel consumption numbers.
According to German law, if an automaker misrepresents fuel economy by over 10 % compared to the actual fuel consumption rating, owners are allowed to ask for compensation.
The Porsche 911 was completely designed this year with the brand new 992 Porsche 911. Although it’s a performance car first and foremost, the 911 has also displayed impressive fuel consumption numbers with a posted average fuel economy rating of less than 10.0 liters per 100 kilometers on some models.
We’ll keep you posted as this story develops.