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17 Oct 2025

Cause revealed after major lorry fire shut M5 in Devon for hours

Devon and Somerset Fire and Rescue Service confirm lithium-ion battery likely caused M5 lorry fire near Exeter between junctions 29 and 30, causing long delays and traffic disruption

Cause revealed after major lorry fire shut M5 in Devon for hours

irefighters tackle the lorry blaze on the M5 near Exeter as the vehicle’s contents spill across the carriageway. Credit: Devon and Somerset Fire and Rescue Service

Devon and Somerset Fire and Rescue Service has confirmed the cause of a lorry fire which led to long delays on the M5 in Devon on October 15.

The fire service told Exeter Today the blaze was most likely caused by a lithium-ion battery.

The incident happened on the northbound side of the motorway between junctions 30 and 29 in Exeter at around 11.35am.

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National Highways said the lorry was carrying 20 tonnes of household waste and electrical items, including batteries and domestic appliances.

At one stage, queues stretched for nine miles, with diversions and significant delays in place while emergency services worked to bring the fire under control.

The road reopened at around 9.10pm, but motorists were advised to expect continued delays while traffic cleared.

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