Why Do Diesel cars make more noise than Petrol cars ?

because diesel is an impure fuel & petrol is comparitively pure fuel so while diesel contains more unwanted substances petrol contains less of them so it is to be compressed and the piston is moved far vigourously than in petrol engines but there are ways to reduce the noise

Cause it is cheaper than a petrol vehicle.

Coz most diesel engines are big but even petrol engines i.e an eight cylinder put on straight line will make the same nose only it burns up all the gas unlike diesels.

its something to do with the compression rate and combustion. car manufacturers are using technology however to make diesel engines more efficient and kinder to the environment ooh and less noisy

Much higher compression ratio.

because it is diesellllllllllllll.

more of compression prob may be

Its because of the design of the engine. Diesel engines are way more heavy duty than gas engines because they ignite the fuel by compression which heats the air up enough to ignite the diesel fuel where a gasoline uses a spark plug and has only about half the compression of a diesel engine. Diesels are also much more fuel efficient than gas engines. As technology improves they are making them a lot quieter now a days and when the new low sulfur fuel is phased in you will see more diesel powered cars. Europe is way ahead of us on that as 30 to 40% of their cars run on diesel.

In Diesel Engine Comburstion is at high Pressure and temperature so diesel engine makes more noise than petrol Engine.