[daleag]

CNG is much cheaper than LPG. Both are also much higher octane than gasoline, so would be well suited to a turbo.

 

[daleag]

Not in the UK CNG is virtually unobtainable LPG is under half the price of petrol and has only a small loss of MPG and with modern systems no loss of performance

Nice!! Here in the US LPG is significantly more expensive than petrol, but CNG at least 30% up to 50% cheaper than petrol.