Kettering Motorist Centre
Trafalgar Road
Kettering 01536 410142/410143
Have used them before, they are an independant family run business with good levels of customer service and resonably priced.
Also there is Rockingham Motors in Corby and Rushden who are good Fiat dealers, we just had our Ulysee serviced at Rushden and it worked out £20 cheaper than our local independant in Wellingborough!!!