SL 55 AMGCompleted

Hello, I am interested in an R230. First I preferred the SL 500 with 387 hp (BJ 2006), but I noticed that an older SL 55 (BJ 2004) no longer costs in the purchase. Well, I wanted to get an offer from two insurance companies and both rejected the SL 55 AMG and the SL 500 for a comprehensive insurance! They meant that the vehicle caused too many accidents, which are of course also expensive. r risk group and have been driving for 20 years without a self-inflicted accident. I am currently even fully insured with one of these insurance companies. Is this normal that I don’t get full coverage? Do I ask the wrong insurance or is there something wrong with my details (e.g. that I don’t have self-used residential property)?