[herberpower]

in December last year, the job car is not working. He is missing car at work. I started to use my car to work.

at work they are often short trips and the engine is cold. most days it's cold winter and at night. making it necessary to put the lights, fan and heated rear window.

now it is not cold. night is only part of the time.

to start using the car to work. climbed fuel consumption.

I made a modification. change tires 195 / 55R15 to 175 / 65R14 (origuinal measure). I put the tires covers.

at first start working consumption was 6.5 l / 100 (36 MPG US) . consumption is the work and private use.

consumption before leaving to use the car for work was 5.7 l / 100km (41 MPG US)

without using the car to work. since early May.

the last consumption was 4.3 l / 100km (54 mpg US). this is the consumption lower than I succeeded.

I think some things influenced the consumption.

Winter consume more. to put more lights. fan. Heated rear.

changing tires for a more narrow. and lighter. takes some of consumption.

the most important fact. how to drive. putting the longest speeds. accelerating treading the 80/100% throttle. if possible by the traffic. coming more slowly to traffic lights and stop.

I'm doing the same thing on the motorbike. but with worse results.