Recently ran a report for my 2014 Lincoln MKZ Hybrid on the etis.ford.com website and found out that it has a 2.56 final drive ratio. I've noticed many articles mentioning a 2.91 final drive ratio so tonight I went back to the website and entered in a VIN number for a car that I know has the optional 19" wheels instead of the standard 18" wheels and it has a 2.91 final drive ratio!
The higher drive ratio will have better acceleration but would expect worse mileage.
The higher drive ratio will have better acceleration but would expect worse mileage.