this post was submitted on 16 Jan 2025
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Basically nobody actually needs a tach taking up as much space as the speedometer.
RIP anyone that drives a manual, tows, or goes off roading.
On a more serious note I’d imagine they stick around for diagnostics and inclement weather(forcing the car into a particular gear). Since the space is already there they generally have a bunch of other gauges and crap inside of them (all the warning lights that are usually off).
I am not an off-road guy, but I drove a stick and towed heavy stuff forever. You don't need the tach if you have experience or ears. If you can't drive manual without a tach, you're a shit driver frankly.
The only reason I've ever used a tach is for break-in on a vehicle or for hypermiling.
Edit: before I went electric in 2017 and haven't looked back :)
I use it because on my bike I need to set the correct minimum RPM after cleaning my carbs. Also sometimes I want to go faster than I should in 6th, a quick glance at the tach tells me how much headroom before redline I've got.