Drove through fairly deep puddle at speed... mpg plummeting :/

[rimsy]

Made a massive balls up on my way home from work today - travelling about 25 mph round a corner and boom - big puddle... probably around 6-7 inches.
Water certainly didnt splash up over the bonnet however the subsequent 5 mile drive home my average mpg (which was reset 15 miles previously) dropped by about 10mpg (uk numbers).
Any likelyhood I've caused serious damage? Little bit concerned as its only done 5k miles and has so far been a dream car.

 

[piotrek91]

Hitting 6-7 inches of water at 25mph must have been quite a shock!
As long as you don't have a check engine light, I'm sure your car is fine, and the MPG drop you observed might be caused by something as trivial as a DPF regen cycle.

If you haven't seen it yet, check out the top gear video of the CX-5:

http://www.mazdas247.com/forum/show...-Gear-S20E05&p=6196617&viewfull=1#post6196617

The car does not seem to mind a little water and mud..