Hi there, Paul H has answered your question in the C3 Pluriel area. To reiterate his post, pushing the button briefly on the end of the wiper operating stalk will cycle through different options in a set order. I can't remember exactly which order but they include date and time, average comsumption since last reset, lies since last reset, miles to go before empty, instantaneous mpg, average speed since last reset. Reset is done by pressing and holding the same button for about 5sec. Hope this helps Mark