Not sure if the link will work but I put the reg of my 190 in for an oil and filter change quote on national website and it gave me a price of £40.57 for mid range or £55.58 for premium. On their website they have a 10% off coupon too.
The mid range price would be £36 for oil,filter and labour?
http://www.national.co.uk/oil-vehicle-search.aspx
Anyone ever used them before?
Is this too good to be true?