Depends if it is made up of my daily commute or one big journey.
Daily commute £60 sounds about right, maybe more like £70 if its a cold morning and if I wake up late. A big journey I'd hope to get that distance on £50, but I tend to sit at 60ish, my engine runs about one third less RPM at that speed compared to 70 and that makes a big difference to the MPG I get.
1999 Ford Focus 1.8 petrol.