Low speed torque and driveability ?

Dyno tests and engine output data needs to include average power not only peak (area under the curve). As well as engine weight, physical engine size, average fuel usage
under different loads, octane requirements and other data. Too much weight is given to peak numbers and output per/CID. Example: A small CID turbo engine using 93 Octance putting out lots of peak power but has little low end takes up a lot of space weights quite a lots (plumbing included) and get crap fuel real world fuel mileage