Does my speedo or Google Maps show the correct speed?

Google maps shows the speed limit of the road you are on and your current speed. I’ve noticed that this is 4mph less than that displayed on my speedometer. It’s the same in my wife’s car and a friend has...

Are Google Maps journey times accurate?

With all the changes to speed limits, I.e. 30mph down to 20mph, and a lot of roads now reduced by 10 mph that used to be 60, 50, or40 mph, how accurate Is Google maps now on their destination times. Are...