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911 Turbo and 911 Turbo S
Coupé and Cabriolet

The 911 Turbo concept
Efficiency Technology Design Model range

6
8 12 16 18

Performance
Engine Transmission Chassis

26
30 42 52

Responsibility
Safety Environment

62
64 74

Personality
Comfort Personalisation

78
80 90

Service Summary Technical data Index

106 108 110 114

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The 911 Turbo concept·6·

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The 911 Turbo concept | Efficiency

Were those moments when you exercised moderation always the crucial ones? The efficiency of the 911 Turbo model concept.
According to the definition, efficiency is the ratio of work input to work output. If something is highly efficient, it keeps work input low, whilst maximising work output. A principle that unreservedly applies to any 911Turbo. But not necessarily to the work that went into developing it.
To understand the evolution of the 911 Turbo, you have to go back to 1974. To France, and the Paris Motor Show. To the first turbocharged 911. The wrong car at the wrong time. At least that’s what some journalists, doubters and waverers thought. Their reservations were entirely understandable. After all, times were hard and oil wasin short supply. Then Porsche launched a car that anticipated the concept of the super sportscar, with its power output of 260 hp, maximum torque of 343 Nm and 5.5-second sprint from 0 to 100 km/h (62 mph).

What on earth was going on at Zuffenhausen? Was it a lack of understanding of the needs of the market? A blinkered desire for power? Perhaps even over-confidence and a lack of awareness?Certainly the desire for power could not be denied. But it had a goal. And the way to that goal followed a unique path. A glance at the data sheet was enough. Alongside the fabled engine output, torque, acceleration and top

speed figures were other, no less impressive figures. A 3-litre displacement and six cylinders in a boxer configuration were all that the first 911 Turbo needed to turn thesportscar world (where the motto was ‘size equals power’) upside down. In other words, the car on show on the stand in Paris wasn’t just a car bursting with power. Here was an idea, an opportunity.

To get more from less. To optimise the ratio of work input to work output. In short, efficiency demands performance. That was the principle. And it still stands to this day.

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The 911Turbo concept | Efficiency

harmonious build-up of power and making the 911 Turbo a much more composed and thereby more fuel-efficient vehicle. All-wheel drive was introduced for the first time, increasing both traction and safety. A major step towards greater efficiency was achieved in 2000 with the launch of the 911 Turbo based on the Type 996. This saw the use of technologies that are also tobe found on the latest 911 Turbo generation. VarioCam Plus reduced fuel consumption drastically, whilst the extending rear wing, through its ability to change position, complemented the already exemplary aeroThe car was made technically possible by an invention from 1905. The Swiss engineer, Dr. Büchi, utilised the energy of the flow of exhaust gases to increase the efficiency of combustionengines. You don’t need to be an engineer to understand the practical benefits of this. Turbocharging means a tremendous gain in power for comparatively small engine displacements. The advantage of small-displacement engines is particularly felt in the lower and middle load ranges – in other words, during everyday driving on the road. In these conditions, fuel consumption and CO2 emissions figures aresignificantly lower than those for larger engines. Another advantage is the compact engine size which reduces weight. The engine takes up less space and keeps the overall vehicle weight down. In short, agility and dynamic performance are increased and fuel consumption is decreased. Over the years, alongside continual increases in power output, the 911 Turbo has seen the introduction of a wide...
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