According to calculations in the petition, owning a Renault ZOE or Twizy for 5 years or 10 years and you'll pay Renault 2-3 times the battery pack cost in rental fees.
Of course they don't mention the 10-year owner will receive 2 or 3 battery packs from Renault. Renault's rental contract guarantees a replacement pack when the current pack falls below 75% of initial capacity. If Zoe's battery ages like a typical UK Leaf, 75% is going to be somewhere around 65,000 miles.
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Leasing the shell and renting the battery
does make sense. For LEAF it is often cheaper to lease a flex plan shell and rent the battery. For a leased or PCP car selling the shell is a non-issue. Just hand it back to RCI at the end of the contract.
Renault should give Zoe customers the choice of owning the battery. I'm sure they would sell more cars. Total cost to typical new car owner might be lower with battery rental, but that is beside the point.
They do offer to sell the traction battery with the Kangoo Z.E. Not sure how many customers purchase the battery. I've never seen a used Kangoo Z.E. without a battery lease.