One area where leasing is a benefit is if there is a problem with the battery. It's rare, but at least one Zoe owner on here had a pack failure. Because their battery was owned rather than leased, their pack had to be removed and shipped back to France for repair, returned and refitted, which meant they were without their car for weeks. If you lease, then a replacement pack is sent out for a swap over, which would reduce the inconvenience. It's not common, but worth bearing in mind. If you are planning a PCP and return after 3 years, then leasing the battery probably makes more sense.