Which optima is right fro VW Passat ?

You require a group 48, 0r 41, Optima does not make this size, however
L=12 W = 6 7/8, H = 7 9/16

The Optima D75/25 will fit the footprint and provide enough CCA etc

Here are a couple of links forthe 75/25 and D75/25

Just double check your +/- connections

http://bigtimebattery.com/store/d75d25optimayellowpot.html

http://bigtimebattery.com/store/optima_7525_red_top_battery.html

Remeber our price includes shipping