Tuesday, 09 October 2018 15:25

Subaru Destroys 293 Ascent SUVs After Coding Error Leads to Unsafe Cars

Written by Jessica Miley, Interesting Engineering
Subaru Destroys 293 Ascent SUVs After Coding Error Leads to Unsafe Cars Debs/Flickr


A coding error has led Subaru to recall and dispose of 293 of its Ascent 2019 SUVs. A National Highway Traffic Safety Administration (NHTSA) report revealed that the error caused robots building the cars to miss two critical welds in the car's fabrication.


The welds were located on the car's B-pillars, which hold the hinges to the second-row doors. The missing welds reduce the overall strength of the car’s body and could result in passengers suffering injury in a crash.


No Fix Available on Post-Production Vehicles


There is no way to fix the error post-production, so all the cars needed to be destroyed rather than refurbished. Subaru said only nine of the affected cars were actually in the hands of consumers and that all affected customers would receive a replacement vehicle.


"All potentially affected vehicles will be inspected by an SIA factory representative, and if the vehicle is missing any spot welds, the vehicle will be replaced with a new one. There is no physical remedy available; therefore, any vehicles found with missing welds will be destroyed," a document submitted to the National Highway Traffic Safety Administration read.


Software Errors Rare in Modern Carmakers


The defected cars were located between July 13 and July 21, although not all cars produced in this car were affected by the flaw. The company launched an investigation in production procedure after an audit discovered a single example of the mistake in July.


According to Stout’s 2018 report of Warranty and Recall, almost 8 million vehicles were recalled in 2017 because of a software or integrated circuit issue. This year, other major car makers like Ford and Tesla have also experienced costly recalls due to errors.


As we head into the robot revolution, automakers need to take a warning from Subaru and ensure development practices are strict without any exceptions on release quality. Although it isn’t common to hear of coding mistakes causing production problems, it isn’t totally unheard of.

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