Social claim: BYD 2,700‑mile long‑range drive

A BYD long-range drive claim that spread on social media on May 25 rests on a real number that has circulated in recent coverage, but the underlying evidence remains limited in public view. An X post from EV enthusiast account Da_body2 said a BYD vehicle completed a roughly 2,700-mile test drive and referenced route details, yet the thread did not include independent documentation or a statement from BYD visible on X. Electrek reported on May 20 that BYD’s Song Ultra EV had completed an over-2,700-mile, or 4,395-kilometer, trip across China’s largest expressway. BYD’s own public materials reviewed for this story describe the battery and charging technology tied to the model, but not the specific social-media thread. ### Where does the 2,700-mile figure come from? Electrek published the clearest public account now available in English. The May 20 report said BYD used a Song Ultra EV equipped with its new Blade Battery and Flash Charging technology to drive more than 2,700 miles, or 4,395 km, across China’s largest expressway. (electrek.co) The X post that circulated on May 25 appears to echo that same figure rather than introduce a new independently verified result. The social post, as described in the briefing and reflected in the inaccessible X thread metadata, did not by itself establish start-and-finish records, charging logs, or third-party validation. (electrek.co) ### What vehicle is being linked to the drive? BYD’s Chinese product page lists a Song Ultra EV model and shows the vehicle was being marketed in May 2026 with promotional purchase terms running through May 31. The page also says owners would receive one year of free charging at BYD Flash Charging stations from delivery, which ties the model directly to the company’s newer charging network. (x.com) BYD’s public pages available through search do not, in the material reviewed here, spell out the 2,700-mile drive on the product page itself. That leaves outside reporting, rather than a directly accessible manufacturer release on the model page, as the main public source for the distance claim. ### What technology is BYD saying it tested? (byd.com) BYD said on March 5 that its second-generation Blade Battery and Flash Charging system were designed to address charging speed and range. The company said the system can deliver up to 1,500 kW through a single connector, refill from 10% to 97% in nine minutes, and make ranges of more than 1,000 km possible under the Chinese CLTC test cycle. (byd.com) A separate BYD release on its Super e-Platform said the company had targeted 1 megawatt charging power and “5 minutes of charging for 400 kilometers of range.” Those figures describe the company’s technical claims for the platform, not an independently audited real-world endurance run. (media.byd.com) ### What is still unverified about the social claim? The May 25 social circulation does not, on the evidence publicly available here, show a complete independently verified test protocol. The missing elements include a full route record, number and duration of charging stops, average speed, weather conditions, driver rotation and third-party oversight. (byd.com) Electrek’s report supports that a BYD-linked 2,700-mile drive claim was already in circulation before the X post spread more widely. But no manufacturer statement directly tied to the X thread was visible in the materials reviewed, and no outside certifier was identified in the public sources examined for this story. (x.com) ### What can readers watch next? BYD said on March 5 it had already installed 4,239 Flash Charging stations across China and expected to have 20,000 operating by the end of 2026. Further company releases, route documentation or third-party test data would provide the next concrete checkpoint for evaluating how the 2,700-mile claim fits into BYD’s broader charging and range push. (media.byd.com) (electrek.co)