Yes it does, though Lexus recommends 91-octane premium gas for “optimum performance.” Cars.com lists the manufacturer’s fuel recommendations in its research reports  (under the Snapshot heading at the top), but there is some flexibility.

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Lexus says the RX 350 will retard ignition timing to compensate for lower-octane gas to prevent engine knock (or “ping”), resulting in a small loss of horsepower. Lexus adds, “Drivers usually won’t notice the loss in horsepower unless they have a heavy foot on the accelerator and ask the vehicle for maximum performance.” Premium gas could also make a difference when the vehicle is fully loaded, pulling a trailer or driving through mountains.

Our advice: Try a few tanks of regular and then a few tanks of premium, and see if you notice any difference.

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Answered by Rick Popely on May 30, 2010 in Lexus , Lexus RX 350 | Permalink

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