Earlier this evening I realized I didn't know why my RAV4 has a tachometer to show engine RPM. My Camry had one too. I don't think I ever look at it except to tell if the engine is already running. What is that doing for me, really? With a manual transmission, the tachometer could prevent over-revving the engine and help me judge shift points, but the automatic transmission … [Read more...] about RAV4 Blogging – Why a Tachometer?