Open Supercharger Access, and What It Does Not Give You

From March 2026, more than 27,500 Supercharger stalls globally have been open to non-Tesla vehicles, including Ford, GM, Rivian, Hyundai and Stellantis marques. The reference point this entry records is a distinction: access is a network setting; referral credit is an account property.

The two definitions

Network access determines which vehicles may draw power at a stall. Referral charging credit determines whose account pays for a session — it is held on a Tesla account and drawn down by a Tesla vehicle on that account. Widening the first has no effect on the second.

Why no exception exists

The mechanics preclude one. A Tesla drawing on an allowance is authenticated by the vehicle at the stall, and the allowance is consumed before any payment method is touched — which is why the driver sees no charge until it is exhausted. A non-Tesla authenticates through its own manufacturer's or a third-party application, which has no visibility of a Tesla account balance. Two authentication paths; one of them cannot see the credit.

The household case

One Tesla and one other-brand EV cannot share an allowance, even at the same stall on the same day. Credits and allowances are documented as non-transferable and cannot be cashed out, so no workaround exists to be found.

The disposal case

Tesla's published terms do not address what happens to an unspent allowance when the vehicle is sold, so this desk states the bounded position rather than inventing a rule. The documented parts point one way: credits are non-transferable and non-reissuable, and an allowance is spent by charging. The safe reading is that an unspent allowance is worth nothing to a new owner and nothing to the seller. Where a sale, trade-in or lease return is expected, spend it first.

What this changes for a UK buyer using a code

Nothing. The UK benefit is approximately 650 miles of free Supercharging on a new Model 3 or Model Y, unaffected by which other vehicles may charge. Recording that plainly matters: treating every Tesla development as referral news is how referral pages lose their reliability.

How the billing paths differ, for the record

Recorded because it explains why the distinction is structural rather than administrative. A Tesla session is authorised by the vehicle's own identity at the stall, and any allowance held on the associated account is drawn down before a payment method is consulted. A non-Tesla session is authorised through a separate application and account, which issues its own charge against its own payment method. The two systems settle independently, and no step exists in either at which a Tesla account balance could be presented to the other.

The question worth asking instead

Whether the allowance can be physically spent inside six months — roughly four to six Supercharger sessions for a UK reward. Owners who cannot charge at home spend it without changing a plan; owners with a home charger and an overnight tariff must route deliberately, and are the group most likely to let it lapse. Terms: Tesla UK Refer and Earn.