Testing grille blocking & wheel skirts: +5.7% improvement

metrompg.com series | Highlighted on Fuelcons

This further experiment published on metrompg.com delves into a DIY aerodynamics experiment conducted on a Pontiac Firefly (like the Geo Metro a variation of the Suzuki Cultus), aimed at enhancing its fuel efficiency. The author drew inspiration from Phil Knox, who achieved an impressive 28% increase in highway mileage by implementing aerodynamic modifications on his 1994 Toyota T-100 pickup.

The two modifications put to the test were a grille block and rear wheel skirts, both crafted from readily available materials.

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