"Services were randomly every 15-25kms with non specialist dealers and no steel sump upgrade. I asked about trans oil changes and was assured they were done, but couldn't find any evidence to back up. Together with the fact the newish disc brakes needed to be machined (wheel shaking when breaking, but new discs and brakes)."
Those things would put me off the petrol, particularly if the TDV6 appears to be much better looked after from what you've mentioned.
Scott

