saving fuel is only one aspect

there are many things people don't know about diesel engine, as most people don't drive it...

- good gas mileage is only one aspect
- trouble free - it doesn't need electronic during running, thus greatly reducesd the chance of failure. how many times did you see a diesel truck lying on road side?

- durability - an diesel engine normally last 300kmi to half a million miles

- value keeper - because its durability, car mileage isn't a real matter, therefore you see a car with diesel engine still very expensive

- no emission test - many states do not require diesel smog test

the drawbacks:
- slightly louder engine sound;
- in cold area in winter, you may need special oil and/or fuel or requiring heater block
- expensive when you purchase new

i have three diesel cars in my family, all running worry free. please note, i drove many gas cars before switched to diesel, and will never turn back.