Volkswagen Polo CL
The Mark 2 Polo was used extensively by Volkswagen to develop future innovations, for example supercharging. The supercharger-equipped GT G40 version was introduced in 1987, in LHD Coupe form only, first as a limited batch of about 500 cars, most of which were sold to VW workers (as a homologated version of the car for the G40 Cup race series) and later as a normal production version.
This model featured the 1272 cc engine with a small bore G-Lader supercharger, giving 113 PS (83 kW) at 6000 rpm, as well as modified suspension and the bodywork of the “normal” GT Coupé. The car could reach 100 kilometres per hour (62 mph) in 8.1 secs from and had maximum speed of 196 kilometres per hour (122 mph) it was used by VW to set a number of world endurance speed records — such as the 1300 cc class records for speed over 24 hours and speed over a distance of 5000 km. A G-Lader would later be used on the larger and more technically challenging G60 engine used in the Golf and Corrado.
An extremely fuel-efficient two-cylinder diesel was prototyped in the mid-1980s with a G40 supercharger to overcome its small capacity, although this did not make production. A high-fuel-efficiency model which did make production was Formel E (E for Economy), introduced in 1983.
This used a high-compression 1272 cc engine, longer gear ratios and an early-stop-start ignition system (called SSA) that would cut the engine when idle for more than two seconds to save fuel whilst temporarily stopped in traffic, and restart the engine when the gear lever was moved to the left in neutral. The system could be enabled or disabled by means of a toggle switch below the light switch. Similar systems were later used on the Volkswagen Golf Mk3. Similar systems were developed by other car manufacturers.