car turbo's.

[springbulb81]

I know how Turbo's work generally, but if the car is a Turbo Diesel does that make a difference to its power and fuel consumption?

[heathfield]

More air in the cylinders means less unburned fuel. Thus more power and better economy.

[Space]

According to this
http://en.wikipedia.org/wiki/Turbo_diesel
and this
http://en.wikipedia.org/wiki/Diesel_engine
a turbo increases both power and efficiency.

But my guess is that is only improves your fuel consumption if you use the engine properly (at its peak efficiency RPM).

[logic]

Both above answers are correct, but turbo assisted engines are less economic, due to the fact that as turbo pressure increases, a link rod from the turbo unit opens up the injector pump, thus giving it rapid acceleration, in many cases comparable with petrol engined vehicles,
if you know how to go about it, adjustments can be made to the dump valve on the turbo unit itself, to giv even more power. I have used turbo and none turbo diesel engined cars for the last fifteen years, and would never dream of going back to petrol again.