My IS250 SE-L was one year old last Saturday. It has about 7,500 on the clock, most of which has been local, urban and rural motoring. The overall average for that year, based upon actual written records of all petrol in and all miles done, is pretty much precisely 30 m.p.g.
On the occasional long motorway journey with cruise set at 70 m.p.h I get indicated tank averages of up to 44 m.p.g. but the computer is always optimistic and the real figures based upon petrol in and miles done were more like 39 m.p.g. Still pretty good IMHO.
Please forgive a stupid question, but where on the IS250 can I find the MPG figure? (model is250 sport multimedia). On a mix of urban/mway driving I am estimating 30mgp average but that's a crude guess based on filling the tank/remembering the mileage!
Should come up on the trip computer. The button is one the right hand side of the steering wheel (if it's the same as mine!!!!)