Mine as well.

 

The dial on mine is consistently about 1 MPH higher than the digital displays.

 

What's really going to blow your mind is that the displayed speed is typically 3 to 4% faster than the speed the vehicle is traveling

 

The lower speed is probably closer to actual. You can verify against GPS speed in Google Maps.

 

Works by design. Even though the police could stop you for doing 1MPH over the limit changes are they won't. So don't worry about.

 

As a side note, most speedos display speed on the "happy" side. By law, the only need to be accurate to -0 / +10% above 50 mph, and -0 / +5 mph below 50 mph. So a speedo that shows 25 mph when you actually go 20 mph meets the law. Same if it reads 55 mph at 50 mph. Or 110 mph when the real speed is 100 mph.

All Toyotas I have owned (8 of them) have always been between 1 and 2 mph above GPS. Most European cars are even bigger offenders, with speedos closer to the +10% limit. On the other hand, my only cars that have been spot on were two Fords and a BMW. Americans are usually more careful about accurate measurements and calibration of instruments. And BMW is obvious - quality comes with price.

 

Regardless, the speed limit is the speed limit. If the limit is 65MPH and your doing 66MPH a traffic cop can still put you over by law and give you a ticket for speeding. You should check the Highway Traffic Act in your area to see what the pentalities are.

 

My 07 Camry V6 speedo reads about 1.5-2 mph faster than actual at highway speed, 70+ mph.. My 2017 Audi A4 allroad speedo reads about the same amount above actual. Consistent by the difference, 1.5-2 mph, not by %.

 

If I’m not mistaken, don’t Highlanders come with 2 different sized wheels depending on the model you choose? Could it favor the larger wheels for accuracy? Curious

 

The wheels (metal) are different sizes but the outer diameter of the tires (rubber) are the same.