Possibly not this low but the increased refinery capacity etc may make the prices more competitive than at any other time.

Thanks

Diesels don't thrive on high mileage when it comes to part exchange time according to my experiences

Low mileage isn't the biggest problem, its regular short journeys especially in traffic.

If you only covered 100 miles a week but that was two journeys on the open road of 50 miles apiece Diesel would be perfect.

Diesel looks attractive now, but if you have to drive nowhere regularly by extending a regular 10 mile journey to 60 miles once a week just to keep the DPF happy then the pro's take a dive, some cars appear able to cope with short journeys but those we hear of arn't usually that old, be interesting to see how these fare as time goes by, the cost of a new DPF would buy a lot of petrol that wouldn't (yet, give it time) need to be driven nowhere to keep it happy.

LPG varying around the 50/56p mark if you keep away from motorway type sites is another possibility, again only if it works for you (it does for us), but you have to buy cars with suitable engines and allow space for the extra tank...this can work in your favour if you don't mind older cars, as you can buy older larger petrol engined cars for silly money, then convert them and enjoy Diesel running costs...the downside being you really have to keep the car a good while to make conversion worth it so not a good pure bangernomics solution.