Mainstream Cars ]are faster than they used to be, e.g cars most people travel in. You only have to look at average motorway speeds compared to when I started driving in the early 80’s. In town speeds are a different matter.
When I bought my 1977 Mk1 1.6 Golf, with its whole 75hp it was a rocket ship compared to the other vehicles my mates had, usually minis or Austin allegros or Morris Marinas as it could do 0-60 in about 12 sec rather than 15 plus.
The equivalent Golf 1.0 now has 110 hp and will do 0-60 in less than 10 secs, but will deliver a real world 45-50 mpg rather than the 28-30 mine did.
I had a Civic Vti with a normally aspirated 1.6 with 100bhp/litre- lovely engine but you had to rev it above 6000 to get any real go-sounded awsome but was wearing on a long trip with its 4000rpm at 75mph. The 1.2 Polo only has 91hp/litre but is in everyday driving much more relaxed.