What happens when replacement packs for older electric cars run dry
Recent headlines caused a stir: Mercedes reportedly can no longer supply replacement batteries for the Smart ED. Owners of early EVs such as the BMW i3, Renault Zoe, VW e-Up, or Nissan Leaf suddenly wondered: will their cars soon be bricked? Or is this just scaremongering?
Panic in the Charging Bay
For classic-car drivers, the hunt for spare parts is part of the game. For EV owners, however, the thought of unavailable batteries is panic-inducing. The issue flared with the Smart Fortwo Electric Drive, prompting headlines like “Battery defect means scrapyard” (auto motor und sport) and “Mercedes disaster: EVs beyond repair” (karlsruhe-insider.de).
Mercedes quickly rushed to calm fears, insisting the problem affects only the third-generation Smart ED (451 series, built 2012–2015). “Currently, repairs are still possible,” a spokesperson stressed, but notably avoided promising new batteries. Demand for replacements seems to have been underestimated. In Germany, Mercedes now relies on an external partner, reportedly Bosch workshops, for repair solutions. Independent specialists such as EV Clinic Berlin have also carved out a business repairing packs. One case involved 80 of 93 cells damaged beyond rescue. Result: total loss. Fittingly, the initiative to save affected Smarts is called “Valhalla.”
BMW: A Decade of Security
Does this mean other early EVs are also doomed? BMW says no. Munich promises at least ten years of parts availability after production ends, meaning first-gen i3 models with 60-Ah packs are safe until 2027. Better still, the battery housing allows stronger cells to be retrofitted, since the i3 pack consists of eight modules with twelve cells each.
Storage is key. BMW keeps replacement modules in a “wellness zone”, cyclically charged and discharged to maintain optimal state of charge. “When we install a replacement module for a first-gen i3, it has 100 percent state of health. It’s essentially a new part,” BMW clarifies.
VW: Repair First, Replace Later
Volkswagen follows a similar approach. A spokesperson explained: “For our current EVs we provide repair options during and after warranty, including module replacement.”
Guarantee terms promise at least 70 percent net energy capacity up to 160,000 km or eight years. Beyond that, VW stresses “technically and economically sensible” solutions. Entire pack replacements can easily hit five figures, but individual module swaps are cheaper. A cell balancing process ensures new modules integrate seamlessly with old ones.
VW also stores packs in a “wellness zone,” keeping them between 30–60 percent charge at 15–25°C, with periodic recharging to offset natural self-discharge.
Nissan: Leaf Support with Limits
Nissan takes a customer-oriented stance, though with caveats. The brand points out that only a handful of first-gen Leafs remain in Germany. Support applies only to cars still within the eight-year extended warranty for battery health.
“Of course we support Leaf customers within warranty. If concerns arise, the vehicle is checked by our dealer network, and together with the customer we find the best solution,” Nissan notes. Since the Leaf was sold between 2012 and late 2017, the last warranties expire at the end of this year. What happens afterward remains open.
Renault: Ahead of the Curve
Renault approached the issue early and methodically, with a three-stage circular economy concept: reuse, recycle, and repurpose as stationary storage. From 2012, Zoe buyers often leased their batteries. That meant packs were regularly inspected and modules could be swapped individually, reducing repair costs. After the eight-year/160,000 km warranty, outright buyers face similar terms. But lease customers were shielded, and Renault even offers refurbished packs at 30 percent less than new ones.
The Verdict
For now, the “twilight of EV batteries” looks less like an apocalypse and more like a bump in the road. Early Smart EDs may struggle, but BMW, VW, Nissan, and Renault all have frameworks in place, from storage strategies to modular repairs, to keep their veteran EVs on the road.
Still, the issue raises an uncomfortable truth: unlike sheet metal or trim pieces, batteries age even when unused. The long-term challenge will be keeping packs not just available but healthy. For owners, the message is mixed: comfort in the near term, uncertainty further down the road.
