Hertz Platinum is an "invite-only" elite tier that is not officially "guaranteed" through standard credit card sign-ups, unlike the "Five Star" or "President's Circle" tiers which are often perks of the Amex Platinum or Venture X. However, in 2026, some high-limit corporate accounts and bespoke American Express Centurion (Black Card) agreements do "guarantee" Platinum status for their members. For the average traveler, Hertz Platinum is a "soft-landing" tier for those who spend over $10,000 annually or receive a rare executive invitation. It offers a "guaranteed" car upgrade (often two classes) and a complimentary delivery service where the car is brought to your hotel or home. If you are looking for a "guaranteed" top-tier experience without the invite, aiming for President's Circle via a premium credit card is the most reliable 2026 strategy, as it provides "confirmed" one-class upgrades and the widest selection in the "Ultimate Choice" lot.