Traffic has now returned to normal on M4 Brynglas Tunnels westbound before junction 26 A4051 (Malpas Road).

Traffic is also moving normally at A465 westbound at M4 junction 43.

There's stop-start traffic on M4 westbound at junction 43 A465 (Llandarcy).

Travel time is ten minutes.

Here is how traffic now looks in the area.

The red line indicates where it is moving slowest.

How traffic looks(Image: Google maps)

Delays have also been reported on M4 Brynglas Tunnels westbound before junction 26 A4051 (Malpas Road).

Travel time is 30 minutes.

Traffic monitoring service Inrix is reporting long delays as a result of the fire.

It says there is congestion to junction 27 (Highcross) for eastbound traffic and to junction 23A (Magor services) for westbound.

Traffic Wales cameras have captured the scene of the car on fire.

The car fire, captured by Traffic Wales cameras(Image: Traffic Wales)

Traffic Wales has warned drivers to "pass with care" as the incident is dealt with.

It says eastbound lane three remains open, with heavy congestion on the approach in both directions.

Here's how traffic is affected in the area.

The red line indicates where the M4 is most congested.

How traffic looks in the area(Image: Traffic Wales)