The Daly City (Calif.) Police Department added 12 Ford Police Interceptor sedans and P.I. Utility vehicles to its marked enforcement fleet and plans to purchase up to six more before the end of the year, the city's fleet supervisor told Government-Fleet.com.

In the coming month, the city plans to purchase up to six 2014 model-year Ford police vehicles in addition to the 2013 model-year vehicles put in service in April, said Tom Shiosaka, motor vehicle supervisor for the Daly City PD.

The new vehicles will replace aging Ford Crown Victoria Police Interceptors that have reached the 100,000-mile mark. The city typically replaces vehicles when they reach that milestone.

"Usually you're looking at three to six years, and you're looking at 100,000 miles," Shiosaka said. "The usage dictates the mileage. We try and get rid of them at 100,000."

The 12 new patrol vehicles added in April represent a 37% turnover in the Daly City PD's fleet of 32 marked enforcement units. Shiosaka manages 97 marked and unmarked vehicles for motor patrol, parking enforcement, drunk-driving enforcement, detectives, and administrators.

The new Ford police vehicles are expected to save the agency at least 20% in fuel costs due to their more efficient engines.

The first round of new vehicles arrived in January and were sent to upfitter Pursuit North, which added police equipment including Whelen lightbars and emergency lighting, Setina push bumpers and partitions with sliding Lexan windows, Aedec prisoner seats, Havis consoles, and Havis-Shields fold-down trays to mount equipment in the trunks.

The vehicles were assigned to officers in April.