Diesel flywheels do exist but they don't last and are very expensive.
The 1.9 engine is brilliant and the 6 speed box is so long geared it's wonderful on the motorway. And it's used in another vehicle in China made by saic.
Edit Maxis G10
I plan to get a 1.8t quite soon. Its a tradigy they didn't do the auto option in the UK on petrol never mind auto diesel.