[TW]Fox;11324688 said:
I'm not talking about dropping the same on each, I'm talking about dropping less on the 330i
I may be wrong here, but if this is the usual buy the petrol cheaper and use the extra on fuel argument, then I've just knocked up a spread sheet to help look at the 'cost' of buying/fuel and depreciation over 3 years based on a Petrol/Diesel..
Bottom line, is, and I think you will agree, that even buying the cheaper petrol, (a 330i SE 2003 vs a 2003 330d se) that it's mileage dependant to which is financially more viable.. the break even point for this example, using glass's guide is you would need to do ~6000/year for the diesel to just be more viable then the Petrol..
At 8K miles/annum, the diesel will save you a whopping £230, at 15Kmiles per annum the diesel saves you £913 over 3 years..
I agree with you that if doing say 8K per year mileage, saving just £230 by going diesel is no where near enough to justify the difference between the 330i and 330d as 'cars'..
To the OP, using a 2005 05 ST220/ST TDCI as an example, using glass's guide, over 3 years at 8K Miles/annum the ST220 will cost ~£1344 more to own/run over 3 years.. £37/month..