Hertz gives a free day on 4+ day U.S. rentals when you pick up by Sep. 30. Use promo code 212109. Compare with Amex Platinum and employer discounts.
Hertz is offering a free day on rentals of four or more days in the U.S., with pickups through Sep. 30. The free day applies to the base rental rate, not taxes or add-ons. Rentals longer than 27 days are excluded.
To get the discount, use promo code 212109 when booking. Eligible vehicles include compact cars, SUVs, Jeeps, minivans, and EV SUVs. The offer is limited to U.S. locations and does not apply to international rentals.
Before booking, compare this price with other discounts you may have. The Platinum Card from American Express, for example, offers a discounted Hertz rate year-round with code CDP 211762, plus a four-hour grace period on returns. Some credit cards include a rental car damage waiver, which can save the daily insurance fee. Employer, alumni, or professional groups often have Hertz corporate codes that may beat the promotion.
Websites that compare rental car prices across Hertz, Avis, and National can also help find a better deal. The promotion runs through Sep. 30, 2026, for pickups only; return date does not matter.
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