# Rivian R2 uses up to 26% more energy than Model Y in real-world test

> Out of Spec Reviews put a Rivian R2 Performance and a Tesla Model Y Performance on the same roads on the same afternoon. The R2 used 18% to 26% more energy at every single speed they tested.

- **Source:** [Electrek](https://electrek.co/2026/07/27/rivian-r2-tesla-model-y-real-world-efficiency-test/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a6778b47a8b5936435f0316)
- **Published:** 2026-07-27
- **Category:** Cars
- **Tags:** #tesla #ev
- **Canonical:** http://localhost:4321/a/6a6778b47a8b5936435f0316

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_GearOpen's distilled summary. The full original article is published at Electrek (source link above); GearOpen does not republish the source's full text._