A new analysis of nearly 500 used electric vehicle (EV) sales calls from UK retailers has found that buyer concerns over battery health and warranty coverage dominate early-stage inquiries, highlighting the growing role of transparency in the second-hand EV market.
The study, conducted by data analytics firm Barbuck in collaboration with certification technology provider Generational, used AI-driven voice analytics to identify key themes in customer conversations.
See also: Study Proposes Adding ‘White Light’ to Traffic Signals for Autonomous Vehicles
According to the findings, 31% of calls included questions about vehicle performance, health, or maintenance, while 49% of those discussions focused on warranty coverage and 34% on battery health and range. The report also showed that certified used EVs—those with verified battery data—sell 7.3 days faster on average than uncertified vehicles.
“Battery health transparency is about data driving confidence,” said Oliver Phillpott, CEO of Generational. “When customers understand the true condition of an EV, they can buy with certainty and dealers can sell faster.”
Generational’s certification system, which connects to a vehicle’s onboard diagnostics port, provides an assessment of battery state of health (SoH), real-world range estimates, and warranty verification. Results are displayed in customer-friendly reports designed to simplify technical data and build trust in used-EV transactions.
See also: Cold Weather, Charging, and Heating Significantly Impact EV Range, Green NCAP Finds
Barbuck’s AI platform, meanwhile, analyzed recorded dealership conversations to determine how buyers express performance concerns and how sales teams can address them more effectively. “Our platform analyses the language of thousands of conversations to uncover the real questions buyers ask, the FAQs sales teams need to answer better, and the marketing messages that actually drive conversions,” said Elly Harron, Managing Director at Barbuck.
The companies said that improving transparency on battery condition and warranty coverage could accelerate sales cycles and help standardize quality benchmarks across the pre-owned EV market. As consumer awareness of battery degradation grows, such verification tools are increasingly becoming an industry expectation rather than a competitive advantage.