So we have 4 cars (E class, SLK, Q5 and Fiesta) on multicar with Aviva. No claims (ever), no convictions (ever), no circumstance change, or car change, but the renewal quote was up 20% over last year. They flat refuse to do a price match or change their quote any way - just told me to shop around if price was important, and suggested I make sure to look at other 'Defaqto 5*. I did. Aviva quote was ~1250, AA and others at ~980, and Admiral (3* rating) come in at £680. I noticed that Aviva are wanting over 2x everyone else for the E-class (£500) - presumably due to the Brabus D6 box, so I called them back and asked why the change. No sensible answer but agreed to speak to manager/underwriter. In the interim I priced up my E-class with no mod on Aviva web site and it was 240. I challenged them on this only to learn that you cannot compare a stand-alone quote with a multicar quote because "in a Multicar the most expensive car will be inflated, and the cheapest 'discounted' so that when they apply the multicar discount, it is on a reduced low premium and therefore delivers less benefit." How sneaky is that? What he was saying is that the 500 on my multi-car renewal doc is not something that can be compared with the 240 stand-alone quote I advise everyone to look carefully at their Aviva renewals and shop around. We have home insurance with them too, so I asked if they would consider a more competitive price rather than lose all my business. Nope. A classic case of customer loyalty rewarded with customer abuse.