Porsche 911 (997) GT3 RS

Porsche 911 (997) GT3 RS

The Porsche 997.2 GT3 RS, produced from 2010 to 2012, represents the ultimate expression of the naturally aspirated, rear-wheel-drive 911 philosophy and the swan song of the legendary Mezger engine in the GT3 lineage. With 450 horsepower from a 3.8-liter flat-six that revved to an intoxicating 8,500 rpm, it was a car that demanded to be driven at ten-tenths and rewarded those brave enough to do so.

The Mezger engine — named after Hans Mezger, the engineer who designed the original 911's flat-six and later the TAG-Porsche Formula 1 engine — was a fundamentally different powerplant from the standard 997's M97 engine. It used a separate crankcase design with dry-sump lubrication, allowing the engine to be mounted lower in the chassis for improved center of gravity. Individual throttle bodies for each cylinder ensured razor-sharp throttle response, while titanium connecting rods and lightweight forged pistons allowed the stratospheric rev limit.

The chassis was equally focused. Wider rear fenders accommodated 325-section rear tires on center-lock wheels, while the front track was widened compared to the standard Carrera. Adjustable front and rear anti-roll bars, pillow-ball top mounts on the struts, and an adjustable rear wing allowed owners to fine-tune the car for track use. The PASM (Porsche Active Suspension Management) system offered Normal and Sport settings, though most serious drivers left it in Sport permanently.

Weight reduction was pursued with characteristic Porsche thoroughness. Carbon fiber was used for the front hood, engine cover, and rear wing. Polycarbonate rear and rear quarter windows reduced weight further. Air conditioning was deleted as standard (available as a no-cost option), as was the audio system. The result was a curb weight of approximately 1,370 kg — impressively light for a car with this level of performance and build quality.

The driving experience was transcendent. Below 4,000 rpm, the GT3 RS was tractable and civilized, but above that point, the Mezger engine transformed into something almost other-worldly. The intake howl built to a crescendo as the tachometer swept toward the 8,500 rpm limiter, producing a sound that many consider the finest engine note in all of automobiledom. The six-speed manual gearbox — there was no PDK option — featured short, precise throws that perfectly complemented the engine's character.

On circuit, the GT3 RS was devastating. It set numerous lap records at the Nurburgring Nordschleife, and its combination of naturally aspirated power, mechanical grip, and chassis balance made it the benchmark against which all other track-focused sports cars were measured. Professional drivers consistently praised its honest, communicative handling and the way it allowed them to exploit its full potential without electronic intervention.

The 997.2 GT3 RS holds a unique position in Porsche history as the last GT3 RS with the traditional Mezger engine. Subsequent GT3 and GT3 RS models switched to derivatives of the standard 911 engine, making the 997.2 the end of a pure-bred racing engine lineage that stretches back to the Le Mans-winning 911 GT1.