Huge wrote:

And some modern cars don't have any physical dials at all.

Of course, mine has the option to display a reasonably large digital
speedo on the dash, which I tend to find easiest to read, especially
since '30' does get a figure on the analogue dial.

Since someone has mentioned 'fudging' e.g. the rpm dial, I feel the
digital speedo must do quite a lot of smoothing, as it never 'flickers'
between a number and +/- 1mph