liamski007
New Member
- Joined
- Oct 4, 2016
- Messages
- 22
- Car
- E350 CDI (2009)
well maybe that headline grabber is a bit unfair as we all know that manufacturers' MPG statistics and 'real-world' statistics are two different things. However, I have been doing my own MPG experiment for a few months now and I'm quite appalled to report that the Merc quoted stats for my car are out by about 14%...I'm getting around 37mpg against the 42mpg reported by the car's on-board computer. As I say I've repeated this experiment numerous times and the sums are correct. I drive around 20k per annum and my run to work (around 25 miles each way) is through some towns and country roads so I'm reasonably happy with 37mpg give that the car is a 3litre V6 but when are manufacturers going to start being honest with us. For the record I calculate my MPG as follows:
1. fill the tank right to the top (after foaming of diesel) so that I can see the diesel at the lip of the filler
2. set the trip meter to zero
3. re-fill after a week or so to the exact same place - lip of the filler
4. note the litres taken to re-fill and miles undertaken
5. divide the litres by 4.54 to get gallons and divide this into the miles done
When I hear people (on here) talk about MPG figures, I often wonder are they simply quoting what they see on the computer or have they actually worked it out.
1. fill the tank right to the top (after foaming of diesel) so that I can see the diesel at the lip of the filler
2. set the trip meter to zero
3. re-fill after a week or so to the exact same place - lip of the filler
4. note the litres taken to re-fill and miles undertaken
5. divide the litres by 4.54 to get gallons and divide this into the miles done
When I hear people (on here) talk about MPG figures, I often wonder are they simply quoting what they see on the computer or have they actually worked it out.