and if you really want to know, Opel and I think SMART have a 3 cylinder diesel engine, 1.2l if I remember it well.
Well the Kyoto thing, the question alone makes it clear why USA have not signed it
EDIT: Here are some of the engines you thought did not exist:
1.2 litre 3-cylinder 61hp - This engine is used in the "3-litre" (referring to fuel consumption of 3 litres per 100 km) versions of the VW Lupo, Seat Arosa, Audi A2, sold in Europe. The injection system uses the "pump-nozzle" or PD system, and the turbocharger is a variable-vane type.
1.4 litre 3-cylinder 75hp - Used in various Polo-based models sold in Europe. The injection system uses the "pump-nozzle" system, and the turbocharger is a variable-vane type.
1.9 litre 4-cylinder 115hp "PD" - again similar to the A4-type engine but with the "pump-nozzle" injection system. Although the peak power is only slightly more than the 110, maximum torque is much higher and the engine has lower exhaust emissions. VW intends to gradually replace the 110hp models with this engine. Not available in North America, reportedly because the exhaust emission controls used on this engine cannot be used with fuels containing greater than 50 parts per million of sulfur, whereas at this writing (1999) fuels in North America can have as much as 500 parts per million.
1.9 litre 4-cylinder 150hp "PD" - Few details are available at this writing. Models with this engine apparently will have badges with "TDI" in all red.
