I don't notice any difference in speed when transmission is in D or S on a downgrade. I thought S was supposed to slow the car down. I have the EXL AWD and am concerned about driving in snow where I live. Has anyone driven a 2017 in snow and encountered any problems? It seems like I am using a lot of brake in either D or S even in normal conditions. I know in snowy conditions I can shift into L. The 2003 CRV I had was great in the snow. All I had to do was take it out of overdrive and put it in S.