The company will blacklist anyone who appears to be buying exclusive cars simply to flip for a profit.

Porsche has vowed to fight back against speculators who buy its cars solely to sell for a profit.

The company's most exclusive cars have apparently attracted interest as smart investments, thanks to rising auction prices for classic models and the latest 911 GT-series variants.

Speaking to Car and Driver at the recent 911 GT3 launch, Porsche's head of GT street-car development, Andreas Preuninger, lamented the trend and promised to screen buyers to prevent cars from being left to stand and 'collect dust' instead of being driven.

"The purpose of limiting a car is not for it to gain value," he said. "We don't want to be laying money on each car's roof when they run out of the factory."

The trend is not new but some 911R owners apparently crossed the line when voicing frustration that the new GT3's optional manual gearbox might erode the value of their manual-exclusive vehicle.

"When I said we're not a hedge fund, I'm talking to those people who are yelling at us for offering the manual transmission similar to the R," Preuninger added. "But if there are people wanting to buy cars like that, then as a company we should try to fulfill that, to meet that demand."

A monitoring program will help determine which buyers are flipping cars. The company says it already typically has a buyer's name for each limited-edition car before it rolls off the assembly line, suggesting it won't be difficult to create a blacklist and give priority to buyers more likely to actually drive the cars.

Image by Ronan Glon.