Then he has to do 15k a year (think: insurance, tax, MOT and repair is gonna come up every year) just to break even driving a £1500 old RWD coupe when he has a much nicer RWD coupe already which he could drive all the time?
My suggestion was to get an LPG conversion (bout £1100 for a 6 cylinder car) on the 330ci instead of buying another car, then he would have £400 change and no extra bills and it would most likely pay for itself in a year anyway due to the fuel savings.
*EDIT*
Fox beat me to it


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