Advertised mpg vs. Real Life mpg – How do they compare?
- To keep weight down and fuel efficiency up all manufacturers remove what they can including the radio, air conditioning and even the nearside wing mirror.
- Cars run more efficiently in warmer temperatures so test centres are kept at a toasty 29 degrees are far cry from our low winter temperatures here in Britain and we are lucky if we bask in 29 degree heat in the summer!
- The alternator that charges the battery while the car is running is, under the rules of the test allowed to be removed. Obviously no body would do this in the real world but in testing it helps to improve fuel efficiency.
- Testing rules state that the testing track must not have a gradient over 1.5 %, so when testing manufacturers make sure their tracks are at a gradient of 1.5% …..downhill! It’s great for saving fuel but in reality I don’t know of anybody who could only ever drive downhill!
So what can we do to get the real mpg of cars, the one we will get with alternators attached, the radio installed and with both wing mirrors? Don’t worry the geniuses as WhatCar? are on the case and you can check real mpg values here - http://www.whatcar.com/truempg/my-true-mpg
If you want to avoid the costs of petrol and diesel entirely why not consider going green with an electric car like the popular Renault Zoe or if you’re not quite that brave just yet how about a hybrid car like the Toyota Prius?
The comments above do not necessarily reflect Rivervale's views unless clearly stated.
17 October 2014
Written by Rivervale