I think 2.65% is fairly market standard (obviously the exact number depends on a number of parameters). As a data point, I pay 5% as my insurance, but (a) I have a cheap car, (b) it is 5 years old, (c) I just take the insurance from the broker with the offices behind the RTA office in Al barsha - If i shop around I am sure I can get a better deal.
Standard depreciation rate used is 15%. If there have been no claims, I think you can expect a better rate (and call around for a better rate).