The car is a standard late 1098cc 4-door saloon, running original wheels with radial tyres. The engine is in fair condition, with good compression of ~160psi all round when I last checked quite a while ago. Regularly serviced by myself and always a good reliable runner. On the downside the timing chain rattles a bit, the crankshaft is a little bit noisy and oil consumption seems to be increasing. The carb is a standard HS2 and was rebuilt partway through the period covered by the log. I tend to run the car slightly on the lean side of normal so as to get the best economy, and have cheap ASDA 20w/50 in the carb dashpot. Fuel is standard unleaded, mainly from my local independent garage (with a few exceptions), and always filled right to the brim.
My driving style is fairly normal (I'd like to think), but I tend to avoid excessive revs unless I need to accelerate particularly quickly. Cruising is normally at an indicated 60mph, occasionally 65 or 70. Basically I don't thrash the car, but am not trying for very best economy either. Most of my driving is on A-roads, with a bit of town driving and light traffic whilst commuting to work too.
As part of the exercise I've also tried to work out how accurate the odometer is, given that if that's exaggerating distances driven it'll inflate the MPG figure. I've done this by comparing the distance reported by the odometer with that on google maps for a known route. It doesn't give a consistent error but it's in the range of 3.5 to 5.5%, so I'm assuming a figure of about 4.5% fast.
Here's the figures:
46 mpg was good
