The 2023 Isuzu MU-X runs a ~80 L fuel tank from the factory, which, paired with official combined figures around 7.8–8.3 L/100 km, means a theoretical range of ~900–1,000 km if you drive like a saint.
If you want “keep going past Coober Pedy” range, reputable Australian brands sell replacement long-range tanks of about 110–140 L.
They add weight (fuel is heavy, shocker), can nudge ground clearance and departure angles, and you’ll want ADR-compliant gear fitted by a pro to keep insurers and inspectors cheerful.
Expect a small hit to economy when fully laden, but the extra legs are ace for towing and outback stretches where servos are rarer than decent coffee.
Consult official documentation for exact figures.
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