I'm a first time Lexus owner and happy with no regrets. I did however pay a trusted automotive shop to check out several used 2009 RX350 vehicles with 36 +/- K miles that enabled me to request a new brake job and switch a brand new set of tires for our preferred brand and 1 (one) item covered under warranty. Because I researched Consumer Reports and had decided on the RX350 my shopping was fairly easy using my paid adviser. The salesman/dealer willing to deal and not say my adviser was wrong on the brake job and switching tire brands got the sale.
My questions is: regarding actual...current fuel consumption the display indicates a wide range; fluctuates from the teens to the 90s and this is something that I just noticed this year and have 53,236 miles. I have watched these INFO numbers during my 16,736 miles and have never noticed this until this year. I realize the only way to get actual MPG is to fill up my tank and write down the mileage and then repeat w/fill up and do the numbers. I know...think that the current numbers running is only an estimate but to 90, 50, etc.; could a fuse be blown? I appreciate any info that I can use before addressing this to a tech/mechanic at the dealer. Thank you, Jeb