# Loss of pep (acceleration vigor) **URL:** \ **Category:** Power/Fuel\ **Tags:** acceleration, fuel-economy, prius, gasoline, toyota\ **Created:** [January 13, 2010, 8:17pm UTC](https://community.cartalk.com/t/loss-of-pep-acceleration-vigor/42484 "2010-01-13T20:17:15Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![dulaneyglen](https://avatars.discourse-cdn.com/v4/letter/d/df788c/32.png) [@dulaneyglen](https://community.cartalk.com/u/dulaneyglen)\ **Post date:** [January 13, 2010, 8:17pm UTC](https://community.cartalk.com/t/loss-of-pep-acceleration-vigor/42484/1 "2010-01-13T20:17:15Z")
2006 Toyota Prius at 105,000 miles experiencing loss of acceleration quality and deteriorating gas mileage ---
**Author:** ![dagosa](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/dagosa/32/9837_2.png) [@dagosa](https://community.cartalk.com/u/dagosa)\ **Post date:** [January 13, 2010, 8:32pm UTC](https://community.cartalk.com/t/loss-of-pep-acceleration-vigor/42484/2 "2010-01-13T20:32:52Z")
“acceleration quality”, please explain…are you talking about the rate of change in acceleration, “jerk function” or hesitation (seriously) ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [January 13, 2010, 8:43pm UTC](https://community.cartalk.com/t/loss-of-pep-acceleration-vigor/42484/3 "2010-01-13T20:43:57Z")
You also might post this on a Prius forum, more chance of finding someone who has had the problem. ---
**Author:** ![bscar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bscar/32/34_2.png) [@bscar](https://community.cartalk.com/u/bscar)\ **Post date:** [January 14, 2010, 12:01am UTC](https://community.cartalk.com/t/loss-of-pep-acceleration-vigor/42484/4 "2010-01-14T00:01:19Z")
at 105k miles it probably needs spark plugs and wires, transmission fluid service, timing belt and water pump replaced. Consult your owner’s manual for the actual information If you live where it’s cold, then your gas mileage will suffer regardless.