By far the best thing to do with anything like animal urine, bird droppings, tree sap and industrial fallout on your car is to remove it with hot, soapy water as soon as you notice it.

Windscreen glass is not such a problem as it's more or less impervious to such stains, even though they can contain large amounts of acid (bird droppings are particularly acidic). But the car's paintwork, being potentially porous, is another matter altogether and plenty of paintjobs have been ruined by allowing these contaminants to sit on the car for longer periods. Leave them long enough and they'll eventually leach into the paint itself, leaving permanent stains.

You can use all sorts of detergents, but make sure they're designed for cars and painted surfaces. Don't be tempted to use household dishwashing liquid, as this has high levels of salt which can actually scratch the paint.

If the stain is already proving difficult to shift, you can try a cutting polish that might move it, but be careful that you don't remove too much paint, especially in the case of a metallic colour with its clear top-coat. A better bet might be to take the car to a specialist in what's called paint correction, who might be able to reverse the damage already done.

Once that's done, keep the paint protected with a good layer of automotive wax (which forms a physical barrier between the paint and whatever's trying to stain it) and try not to park under trees.

Boxer engines are known to use oil because of their design and the Subaru mechanic we spoke to said the consumption you are claiming isn't alarming. He isn't aware of a problem with oil consumption, but told us that it is important to have the car serviced as per Subaru's schedule and to use the recommended oil.

The XV will be fine around town but is very small in the boot, and the same goes for the CX-3. If you want a similar cabin and boot space to the Liberty then go for the CX-5, but also have a look at the new Kia Sportage.