The 2009 Porsche 911 Carrera 4 holds its value

Buying used: With its legendary liquid-cooled, six-cylinder powerplant, it remains one of the most enjoyable cars to drive

The 2009 Porsche 911 Carrera 4 holds its valueNo car has a closer link to its past than the Porsche 911 series. It’s been front and centre, in one form or another, for 50 years. And despite numerous engineering updates and redesigns, it still has a horizontally-opposed engine hanging out the back for power. In 2009, the 911 was on the receiving end…