Your hearing is assaulted by the transmission on one side and if you own a Ford- engined car - the exhaust immediately to your right.
You can either get a generic earplug off the shelf or go to a Boots hearing Centre and get plugs which are tailor made for your ear canals.
I wrecked my hearing playing in rock bands but l also did a spell driving 7.5 tonne lorries which were deafening when sitting in the booming, cavernous cabs. I found the transmission squeal left my ears ringing for days. The other thing is that l arrived at my delivery destination feeling exhausted. I started to wear ear plugs and found the ringing reduced and l did not feel so tired when l had done a day's deliveries.
I have tinnitus and do not recommend it, so please do look into getting a decent set of earplugs!