Staffordshire Fire and Rescue Service were at the scene on the southbound carriageway between the turn off for Whieldon Road and the Sideaway roundabout.
StokeonTrentLive readers reported a silver BMW on fire causing smoke to billow over the dual carriageway.
The incident took place at around 6.30pm.
The blaze has now been put out, but it is not known whether anyone was injured.
We will bring you more on this incident as we get it.
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