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Hawaii Car Rental: How to Book, What to Pay, and Tips to Save
Hawaii rental cars sell out fast and cost more than most mainland destinations. This guide explains how to book, what type of car you need, and how to keep costs reasonable.
A rental car is essential on most Hawaiian islands, and booking one is one of the first things you should do after confirming your flights and accommodation. Hawaii rental cars sell out, particularly on Maui, and last-minute rates can be two to three times the advance booking price. The earlier you book, the more you save and the more vehicle choices you have.
Book early: Hawaii cars sell out
Maui is the most acute example: during peak season (June-August, Christmas-New Year, whale season), rental cars on Maui can be completely unavailable unless you book months ahead. The same shortage is real but less extreme on Kauaʻi and the Big Island. Oʻahu has the most supply. As a general rule: book your car when you book your flight. If your dates change, most rental companies allow free cancellation up to 24-48 hours before pickup for prepaid rates; non-prepaid rates can usually be cancelled closer to the date.
Check rates from multiple sources: the major rental company websites directly, Google Flights car search, and your existing credit card or travel membership benefits. Some credit cards (Chase Sapphire, Costco Visa) provide car rental discounts through partnerships. Costco Travel is a consistently good option for Hawaii car rental rates.
What type of car to rent
A standard compact or midsize car handles every public road in Hawaii. Compact cars are cheaper, easier to park, and adequate for all paved roads including the Road to Hana and the Haleakalā summit road. You do not need an SUV or 4WD for any paved Hawaii road. The only exception is the unpaved summit road above the Mauna Kea Visitor Information Station on the Big Island, which requires 4WD but is also excluded from most rental agreements.
Check your rental agreement for road restrictions before driving: many companies prohibit driving certain unpaved sections (the Road to Hana loop past Hana, Mauna Kea summit road). Violating restrictions voids your collision coverage. A convertible is pleasant but expensive; unnecessary for Hawaii's climate given the trade winds.
Insurance and coverage
Rental car insurance decisions: your personal auto insurance policy may extend to rental cars (check with your insurer). Many credit cards (Visa Signature, Mastercard, Chase Sapphire, Amex Gold and Platinum) provide secondary or primary collision coverage for rental cars when you pay with the card and decline the rental company's CDW. Check your specific card's terms before relying on this. The rental company's CDW (collision damage waiver) typically costs $15-$35/day and eliminates your financial liability for damage except in cases of gross negligence. If your personal policy has a high deductible or limited coverage, the CDW is often worth the cost.
Cost-saving tips
Book the smallest vehicle that meets your needs: compact cars are the best value for one to two people with normal luggage. Avoid airport pickup surcharges if possible; some off-airport locations are cheaper but require a shuttle or rideshare. Return the car with the same fuel level as pickup to avoid expensive re-fill charges ($7-$10/gallon at rental company rates). Avoid buying pre-paid fuel: you rarely use exactly a full tank. For a full cost breakdown of Hawaii travel including car rental, see how much a Hawaii trip costs.
Planning a Hawaii trip?
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Frequently Asked Questions
How much does a car rental in Hawaii cost?
Do I need a car in Hawaii?
Why are Hawaii car rentals so expensive?
We research each guide against primary sources: the Hawaii Tourism Authority and Mālama Hawaii, the National Park Service, the State of Hawaii and its Division of State Parks, the National Weather Service, and the U.S. Census. For culture, language, and history we lean on the Office of Hawaiian Affairs, the Bishop Museum, and the scholarship of Mary Kawena Pukui. We send readers to those sources rather than speaking over them. When rules, prices, or conditions change, we update the page.