Crash View

M4 road traffic accidents

29,200 collisions recorded
1979 to 2025

The M4 appears in 29,200 collisions in the STATS19 data between 1979 and 2025, involving 46,338 casualties. Of these collisions, 724 were fatal and 4,059 were serious. Recorded collisions in 2025 were up 17% on 2024.

Is the M4 closed right now? See today's accidents, overnight closures and roadworks.

Live M4 closures today
All Severities Fatal Serious Slight
Fatal
724
Serious
4,059
Casualties
46,338
2025 252
2024 216
2023 220
2022 226
2021 238
2020 178
2019 362
2018 355
2017 400
2016 479
2015 525
2014 574
2013 534
2012 493
2011 530
2010 583
2009 538
2008 662
2007 780
2006 844
2005 772
2004 867
2003 876
2002 827
2001 855
2000 864
1999 852
1998 860
1997 835
1996 782
1995 812
1994 761
1993 759
1992 739
1991 730
1990 888
1989 835
1988 763
1987 691
1986 749
1985 639
1984 640
1983 606
1982 553
1981 564
1980 552
1979 540

Hillingdon

1,815 recorded here

Wiltshire

1,801 recorded here

West Berkshire

1,791 recorded here

Slough

1,787 recorded here

South Gloucestershire

1,501 recorded here

Newport

1,382 recorded here

Browse all regions

Hounslow

571 recorded along the M4

Hillingdon

428 recorded along the M4

Newport (Newport)

353 recorded along the M4

Slough

288 recorded along the M4

Port Talbot

205 recorded along the M4

Cardiff

93 recorded along the M4

Browse all towns
Browse All Roads Search All Accidents

Accidents on the M4

Fatal
Serious
Slight
Click markers for details

Move Insights

Thinking of moving to this area?

Check flood risk, planning history, EPC ratings and more with a Move Insights property report.

Flood risk assessment
Planning history
EPC ratings & more
Get a property report

Recent Accidents

Showing 20 of 29,200 accidents

Accident 198543C042015

Slight
1 vehicle 2 casualties
Vehicle
View Details

Accident 198543C041015

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 198554MB00115

Slight
2 vehicles 2 casualties
Vehicle Vehicle
View Details

Accident 198501TD00026

Slight
2 vehicles 1 casualty
Van / Goods 3.5 tonnes mgw or under Van / Goods 3.5 tonnes mgw or under
View Details

Accident 198554MB00085

Slight
2 vehicles 2 casualties
Vehicle Bus or coach (17 or more pass seats)
View Details

Accident 1985620J00500

Serious
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 198543C030015

Slight
1 vehicle 1 casualty
Vehicle
View Details

Accident 198543E024015

Serious
2 vehicles 2 casualties
Vehicle Vehicle
View Details

Accident 198554MA00095

Serious
9 vehicles 2 casualties
Vehicle Vehicle Vehicle Vehicle Vehicle Vehicle Vehicle Vehicle Van / Goods 3.5 tonnes mgw or under
View Details

Accident 198552DC00100

Serious
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 1985620D00770

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 198543F014015

Fatal
1 vehicle 1 casualty
Vehicle
View Details

Accident 198543C015015

Slight
1 vehicle 1 casualty
Vehicle
View Details

Accident 198552DF00218

Slight
3 vehicles 1 casualty
Vehicle Vehicle Vehicle
View Details

Accident 198543F009015

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 198543F008015

Serious
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 198543C013015

Slight
3 vehicles 1 casualty
Vehicle Vehicle Vehicle
View Details

Accident 198554MB00055

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 198554MB00025

Slight
1 vehicle 1 casualty
Vehicle
View Details

Accident 198501TC00006

Slight
1 vehicle 1 casualty
Vehicle
View Details