A lack of drive in an automatic gearbox can be down to a number of things. Most commonly, it’s internal wear inside the transmission or torque converter that is not transferring drive from one component to the next. This can be caused by broken or loose vanes in the torque converter, a failed transmission pump, a faulty valve body, worn clutches and bands or a mechanical failure of the gearsets. And more.

Any of these things will require a transmission specialist to assess and repair, but before you do that, check the level of the fluid in the transmission. Low transmission fluid can easily cause this very problem and a top up may restore drive to the vehicle. Then, of course, your job is to find the source of the leak, because the transmission is a sealed system and should not require top-ups outside of regular servicing. But it might just get you back on the road in meantime.

I don’t believe there’s an SUV that would meet your needs. The best and most sensible solution would be a peoplemover, like a Toyota Tarago, Hyundai iMax, VW Transporter.

You haven’t told us anything that might help to identify the problem you want to fix. I guess you want to replace the pump, which is an electric pump in the fuel tank. Take it to a mechanic and get them to fix it.