Cimarron Insurance has filed for an overall 11.7% rate reduction for the Mile Auto and Porsche Auto private-passenger auto programs in Florida.

The filing proposes an October 7, 2026 effective date for new business and November 11, 2026 for renewals. The usage-based programs adjust semiannual premiums based on each insured vehicle’s verified mileage.

The changes include revised base rates, limit factors and household-structure factors. Cimarron said the revised household factor will use the age range between the oldest and youngest rated drivers, replacing a measure based on the number of full-coverage vehicles.

For the new factors, Cimarron is adopting Mercury Insurance’s filed rates and rules without modification. The insurer said its product was originally a “me-too” adoption of the Mercury program and that its own experience lacked sufficient credibility at several factor levels.

The rate indication shows $7 million of on-level earned premium and 3,723 earned car-years. Cimarron selected reductions of 14.6% for bodily injury, 27.4% for personal injury protection, 10.6% for comprehensive and 15.5% for collision, while selecting increases of 17.5% for property damage and 81.3% for towing.