My current company car is a 65 plate Lexus 300h F-Sport (with Mark Levinson). I drive 14 miles a day mixture of urban/back roads 95% of the time.
If I'm really careful I achieved my best last month of 36mpg (around 400 miles to the tank). The first month I had it I achieved 26mpg until I realised that keeping it in sport mode wasn't very efficient.
Compared to my e46 330i my best mpg on the same route was around 23mpg.
Not sure why the Lexus is not getting more love as I find the interior and overall quality a joy of a place to be in?
Currently in my GS450h I'm getting about 46mpg on my daily trip from Bolton to Blackpool and back. Managed 49mpg going down to Hertford a few weeks back and the same driving down to Solihull last weekend using the M6 southbound and The Peaks on the return.