Does the 2020-2021 Toyota GR Supra have a rear differential pinion shaft defect that can cause rear wheel lock-up?
Yes. NHTSA documents a mandatory safety recall for 2020–2021 GR Supra models involving the rear differential pinion shaft. Symptoms include grinding, clunking, rattling, or vibration from the rear axle; severe cases can cause sudden rear-wheel lock-up or loss of propulsion, increasing crash risk. Eligible vehicles receive a free differential replacement, but if an out-of-recall car needs the repair, parts and labor typically run about $4,000–$8,000.
Estimated repair cost: $6,000.00