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Tesletter’s Substack · Aug 20, 2026

Issue 422 - Model Y L Premium reaches 358 miles in Edmunds test

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Tesletter · Tesletter’s Substack

Tesla’s Robotaxi account said riders through August 23 can earn entries to attend a Cybercab launch event, with winners announced August 25. The timing matches reports of a late-August Austin debut after Giga Texas production.

Sawyer Merritt shared Edmunds’ real-world test showing the Model Y L Premium traveled 358 miles on 20-inch wheels, 12% above its 320-mile rating, helped by a 0.216 drag coefficient and improved cabin thermal management. If you are buying a new Tesla, please consider using our referral code http://ts.la/ignacio9266

Tesla added a new underseat storage tray for 2025+ Model Y vehicles, priced at US$40 or C$55, giving owners a concealed non-slip bin under the front passenger seat. The accessory sold out shortly after launch in both Canada and the U.S.

Drive Tesla explains that U.S. Model Y Premium owners can check V2L compatibility by looking up their VIN in Tesla’s Parts Catalog and confirming PCS2 hardware. A PCS1-to-PCS2 Lite retrofit exists in Tesla’s service docs, but it is a 344-step draft procedure and is not currently offered as a customer V2L upgrade.

Tesla’s updated Semi page highlights up to 500 miles of fully loaded range, Megacharging at up to 1.2 MW for about 60% range recovery in 30 minutes, lower running costs than diesel, and fleet software with live status, Trip Planner, remote support, and OTA updates.

The Information reported Tesla could unveil the long-delayed Roadster as soon as August 2026, with a SpaceX version using cold-gas thrusters to briefly lift the car after years of design changes.

Sawyer Merritt posted a viewer-submitted video compilation showing Tesla FSD Supervised appearing to avoid collisions with other vehicles, pedestrians, and animals, a useful anecdotal safety snapshot but not a controlled analysis.

Mike Gapiński completed the first known unofficial HW3-to-HW4 retrofit on a 2022 Model 3, replacing the self-driving computer and using ECU tweaks plus camera adapters, showing older wiring can work even though an official upgrade is not imminent.

Tesla introduced a Certified Pre-Owned program in the U.S. and Puerto Rico with 115-plus inspection points, one free month of FSD Supervised and Premium Connectivity, a one-year or 10,000-mile pre-owned warranty, vehicle history reports, and remaining battery and drive-unit coverage. This is very similar to the program Tesla had a few years ago, and it was great!

As a Tesla fan, I find myself sometimes having to remember what are all those acronyms, here is a list of the ones you can find in this issue.

  • ECU: Engine Control Unit

  • FSD: Full Self-Driving

  • OTA Updates: Over-the-air updates

Have questions? Reach out

Read the original on tesletter.substack.com

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