Why Renting a Car Matters Here
San Bernardino is built around the automobile. The city spans a wide area, key destinations are separated by several freeway miles, and the attractions that draw most visitors, including the mountain communities, desert parks, and coastal beaches, are simply not reachable by public transit in any practical timeframe. Omnitrans provides useful local service and Metrolink connects to Los Angeles, but for most visitors a rental car is the difference between seeing the region and seeing one neighborhood.
The rental market here is served both by Ontario International Airport counters, which offer the widest fleet selection, and by neighborhood locations throughout the city, which frequently price lower because they avoid airport concession fees.
What Actually Determines Value
Headline daily rates are the least reliable indicator of cost. The real total depends on airport concession recovery fees, vehicle license recovery fees, additional driver charges, young driver surcharges, fuel policy, mileage limits, and insurance products. A rate that looks twenty dollars cheaper per day can end up more expensive after fees, while a neighborhood pickup a short rideshare away can save a meaningful percentage on a week-long rental.
Fleet quality and counter efficiency matter as well. Companies with loyalty programs that allow you to skip the counter save substantial time at Ontario during peak arrival periods.
The Ten Leading Car Rental Companies
1. Enterprise Rent-A-Car. The strongest neighborhood network in San Bernardino, with multiple local branches and a genuine customer service culture. Enterprise also offers pickup service, which is uniquely convenient for residents whose vehicles are being repaired.
2. Hertz. A large, well-maintained fleet with strong Ontario airport presence and a loyalty program that lets frequent renters bypass the counter entirely. Hertz typically offers the widest selection of premium and specialty vehicles.
3. Avis. Consistently reliable service with a straightforward reservation process, useful corporate rate programs, and good availability of midsize and full-size sedans favored by business travelers.
4. Budget. Sharing infrastructure with Avis while pricing more aggressively, Budget is a dependable value option for leisure renters who do not need premium vehicles.
5. National Car Rental. The preferred choice for frequent business travelers thanks to the Emerald Aisle program, which allows renters to select any vehicle in a designated area without waiting for assignment.
6. Alamo. Focused on leisure and family travel, Alamo offers competitive pricing on SUVs and minivans, which suit groups heading to the mountains or desert parks.
7. Sixt. Known for a notably newer and more European fleet, Sixt appeals to renters who want a better vehicle for the money and are willing to book a slightly less ubiquitous brand.
8. Dollar Rent A Car. A value-oriented option with solid Ontario availability. Renters should read fuel and insurance terms carefully, but the base pricing is often among the lowest available.
9. Thrifty Car Rental. Similar in positioning to Dollar and often competitive on longer rentals, particularly for economy and compact classes.
10. Turo peer-to-peer rentals in the Inland Empire. Not a traditional agency, Turo connects renters with private vehicle owners, which can produce excellent value, unusual vehicle choices, and delivery convenience. Insurance terms differ meaningfully from agency rentals and deserve careful review.
Insurance and Coverage Decisions
Before accepting counter insurance, check three sources of existing coverage. Your personal auto policy often extends to rentals within the United States. Many credit cards provide secondary or even primary collision coverage when the full rental is charged to the card and agency coverage is declined. Some employers carry business travel coverage. Declining unnecessary products can save more than the rental itself on a longer booking, but never decline coverage you cannot actually replace.
Mountain and Desert Driving Considerations
If your plans include Lake Arrowhead or Big Bear, ask specifically about chain requirements and winter conditions. Most rental agreements permit paved mountain highway travel but prohibit off-road use, and installing chains on a rental is your responsibility. Consider all-wheel drive for winter mountain trips. For desert travel, confirm the vehicle's air conditioning performance and carry water, since summer temperatures east of the city are genuinely dangerous during breakdowns.
Practical Booking Tips
Reserve early for holiday weekends and ski season, when SUV availability tightens sharply. Compare Ontario airport pricing against neighborhood locations, including the cost of getting there. Photograph the vehicle thoroughly at pickup and return, documenting existing damage and the fuel gauge. Choose the full-to-full fuel policy whenever available, as prepaid fuel is almost always more expensive than filling up yourself.
The Outlook
The rental market in the Inland Empire is gradually adding electric and hybrid inventory, which suits city driving well but requires charging planning for mountain and desert trips. Expect further digitization of pickup, wider peer-to-peer adoption, and continued pricing advantages at neighborhood locations over airport counters.
Avoiding the Common Cost Traps
The advertised daily rate is rarely the amount you pay. Airport concession recovery fees, tourism surcharges, and vehicle license recovery costs can add a substantial percentage, which is why picking up from a neighborhood branch instead of Ontario International sometimes saves real money even after a rideshare to the counter. Prepaid fuel options almost never favor the renter. Additional driver fees, underage surcharges, and one-way drop charges should all be confirmed in writing before you arrive.
Insurance is where most renters overpay. Many personal auto policies and credit cards already provide collision coverage for rentals, so verify your existing protection before accepting the counter offer. If you plan to drive into the mountains during winter, confirm that the vehicle class is permitted on chain-controlled roads and ask whether the company allows tire chains at all. Finally, photograph the vehicle thoroughly at pickup and return, since documented condition resolves damage disputes faster than any argument.