Avis Car Rental in Carlsbad operates from a counter inside the McClellan-Palomar Airport (CLD) terminal at 2198 Palomar Airport Road, making it the only major rental brand with a walk-up desk in the baggage-claim area of North County's commercial airport. The lot sits half a mile west of El Camino Real and serves passengers arriving on United Express regional turboprops to LAX, JSX semi-private flights, and Advanced Air connections, alongside a sales-and-service dealer corridor that includes Lexus Carlsbad on the same Palomar Airport Road stretch. Avis, founded in 1946 by Warren Avis at Willow Run Airport in Michigan, now operates under Avis Budget Group and extends reduced rates to active-duty military renters at this location with after-hours key-drop returns. Renters returning vehicles after a coastal trip through Carlsbad can rinse off salt-air residue at nearby tunnel washes such as Soapy Joe's Car Wash on Paseo Del Norte before drop-off to avoid cleaning surcharges. The fleet includes sedans, SUVs, convertibles, and luxury-class vehicles, with Preferred Renter members receiving pre-printed rental documents and keys directly at the counter for sub-five-minute pickup processing.