Leaded Fuel – Raw Figures
Explanation of the Figures
These are the raw figures of fuel consumption with my Triumph Spitfire whilst it was running on leaded petrol (4-star). The figures were used to create the graph of leaded fuel consumption.
The consumption figures are in miles per litre (mpl) as this is the easiest values to record in the UK now fuel is sold in litres. But for those who prefer miles per gallon (mpg) figures, a UK gallon is approx 4.5 litres. So:
9 mpl = 40.5 mpg
8 mpl = 36 mpg
7 mpl = 31.5 mpg
6 mpl = 27 mpg
Table of Figures
Date | Litres | Miles | Actual Values | Rolling Average |
---|---|---|---|---|
03 Aug 1998 | 20.01 | 166 | 8.30 | 8.30 |
08 Aug 1998 | 20.26 | 173 | 8.54 | 8.42 |
10 Aug 1998 | 17.84 | 153 | 8.58 | 8.47 |
15 Aug 1998 | 16.35 | 111 | 6.79 | 8.10 |
17 Aug 1998 | 16.00 | 125 | 7.81 | 8.05 |
23 Aug 1998 | 15.33 | 113 | 7.37 | 7.87 |
29 Aug 1998 | 15.97 | 106 | 6.64 | 7.46 |
02 Sep 1998 | 18.02 | 125 | 6.94 | 7.10 |
07 Sep 1998 | 23.02 | 161 | 6.99 | 7.13 |
12 Sep 1998 | 21.72 | 172 | 7.92 | 7.20 |
03 Oct 1998 | 21.49 | 149 | 6.93 | 7.11 |
11 Oct 1998 | 10.00 | 59 | 5.90 | 7.07 |
12 Oct 1998 | 14.88 | 119 | 8.00 | 7.24 |
26 Oct 1998 | 13.46 | 82 | 6.09 | 7.12 |
17 Nov 1998 | 16.56 | 139 | 8.39 | 7.17 |
21 Nov 1998 | 18.86 | 138 | 7.32 | 7.28 |
12 Dec 1998 | 17.19 | 118 | 6.86 | 7.36 |
29 Dec 1998 | 15.92 | 131 | 8.23 | 7.42 |
Significant events during this period:
- Early August 1998 – New clutch.

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