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Engine Failure Linked to Fuel Choice in Shelby F-150

11/22/2025

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Summary

Story summary

Sharon Harrison and Patrick Neil purchased a modified 2016 Ford F-150 known as the Shelby F-150.
The Shelby F-150 suffered an engine failure after 45,000 km.
4 Guys Autobarn advised 95-octane, despite documentation recommending 98-octane, and Shelby NZ says 98-octane is essential but not always available.
A tribunal found that using 95-octane contributed to the engine failure, though it did not assign sole fault to the dealer.

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Story summary

Sharon Harrison and Patrick Neil purchased a modified 2016 Ford F-150 known as the Shelby F-150.
The Shelby F-150 suffered an engine failure after 45,000 km.
4 Guys Autobarn advised 95-octane, despite documentation recommending 98-octane, and Shelby NZ says 98-octane is essential but not always available.
A tribunal found that using 95-octane contributed to the engine failure, though it did not assign sole fault to the dealer.