Sounds like Citroen is far worse than Vauxhall when it comes to customer care as I'm having a dispute with Vauxhall about my Corsa atm 
Your car is only 5 weeks old @ 1150 miles, there simply isn't any excuse for a brand new car to break down. I'd request for a full refund immediately as the longer you allow the issue to drag on, the less likely you'll get a reasonable outcome (as advised by Trading Standards). It is also best to put everything in writing and sent by recorded delivery (some dealers can turn round and deny having any form of communication / agreement with you
).
AFAIK, it is the dealer's full responsibility when it comes down to problems with the vehicle. If the vehicle is under finance, the finance company has joint liability so give the finance department a ring and get them to put some pressure on the dealer. If the dealer won't issue you a courtesy car, make it clear about the inconvenience and if necessary, get them to pay for a car rental if they don't have one available. Don't let them win you over with petty excuses.
Your vehicle fails under "Fit for purpose" and "Satisfactory quality" under the Sale of Goods Act 1979 (as amended) though before you walk down the path of legal action, make your demands first at the dealer (full refund or brand new replacement, the choice is yours). Refuse to speak to anyone other than the manager or MD as you don't want your complaints being dealt with by a "third party". If they won't give way to your demands, your best bet is to seek Trading Standards and CAB for legal advice and then approach a solicitor to take legal action. Make sure you don't let it drag on for too long

Your car is only 5 weeks old @ 1150 miles, there simply isn't any excuse for a brand new car to break down. I'd request for a full refund immediately as the longer you allow the issue to drag on, the less likely you'll get a reasonable outcome (as advised by Trading Standards). It is also best to put everything in writing and sent by recorded delivery (some dealers can turn round and deny having any form of communication / agreement with you

AFAIK, it is the dealer's full responsibility when it comes down to problems with the vehicle. If the vehicle is under finance, the finance company has joint liability so give the finance department a ring and get them to put some pressure on the dealer. If the dealer won't issue you a courtesy car, make it clear about the inconvenience and if necessary, get them to pay for a car rental if they don't have one available. Don't let them win you over with petty excuses.
Your vehicle fails under "Fit for purpose" and "Satisfactory quality" under the Sale of Goods Act 1979 (as amended) though before you walk down the path of legal action, make your demands first at the dealer (full refund or brand new replacement, the choice is yours). Refuse to speak to anyone other than the manager or MD as you don't want your complaints being dealt with by a "third party". If they won't give way to your demands, your best bet is to seek Trading Standards and CAB for legal advice and then approach a solicitor to take legal action. Make sure you don't let it drag on for too long
