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CrashStats

M4 road accidents: crash map and statistics

Police recorded 3,599 road traffic collisions in the M4 postcode district, Manchester, from 1979 to 2025, and 4,894 people were killed or injured in them. Of those collisions, 30 were fatal and 425 were serious.

In 2025 police recorded 22 collisions, down 19% on 2024 (27).

Collisions since 1979
3,599
1,038th highest of 2,813 postcode districts
Casualties
4,894
1.36 per collision
Fatal collisions
30
30 people killed
Serious collisions
425
461 seriously injured
Collisions in 2025
22
Down 19% on 2024
Casualties in 2025
25
Down 50% on 2024

Road collision statistics for M4

Collisions by severity, 1979 to 2025

  • Fatal300.8%
  • Serious42512%
  • Slight3,14487%

What the data shows

  • M4 had 323 collisions from 2016 to 2025, 48% fewer than the 622 from 2006 to 2015.
  • 13% of collisions in M4 were fatal or serious, against 20% across Great Britain.
  • 415 children under 16 were killed or injured in M4, 8.5% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 36% of collisions in M4.

Where M4 ranks among 2,813 postcode districts

Most collisions
1,038th
Most casualties
1,031st
Most fatal collisions
1,849th
Most serious collisions
1,692nd

Collisions by day of the week

  • Monday506 (14%)
  • Tuesday502 (14%)
  • Wednesday525 (15%)
  • Thursday592 (16%)
  • Friday608 (17%)
  • Saturday498 (14%)
  • Sunday368 (10%)

Light conditions

  • Daylight2,547 (71%)
  • Dark, street lights lit978 (27%)
  • Dark, lighting unknown52 (1.4%)
  • Dark, no street lighting16 (0.4%)
  • Dark, street lights unlit6 (0.2%)

Type of road

  • Single carriageway2,402 (67%)
  • Dual carriageway728 (20%)
  • One way street or slip road383 (11%)
  • Roundabout3 (0.1%)
  • Not recorded83 (2.3%)

Speed limit at the scene

  • 20 mph134 (3.7%)
  • 30 mph3,461 (96%)
  • 40 mph2 (0.1%)
  • 70 mph2 (0.1%)

Weather at the time

  • Fine, no high winds2,785 (77%)
  • Raining, no high winds584 (16%)
  • Raining with high winds57 (1.6%)
  • Fine with high winds54 (1.5%)
  • Snowing, no high winds8 (0.2%)
  • Fog or mist5 (0.1%)
  • Snowing with high winds4 (0.1%)
  • Other51 (1.4%)
  • Not recorded51 (1.4%)

Who was hurt

  • Car occupant2,444 (50%)
  • Pedestrian1,241 (25%)
  • Bus or coach occupant321 (6.6%)
  • Cyclist271 (5.5%)
  • Motorcyclist269 (5.5%)
  • Van occupant129 (2.6%)
  • Taxi or private hire car occupant115 (2.3%)
  • Other vehicle occupant39 (0.8%)
  • Minibus occupant33 (0.7%)
  • Goods vehicle occupant (over 3.5 tonnes)25 (0.5%)
  • Other4 (0.1%)
  • Not recorded3 (0.1%)

Source: Department for Transport, STATS19 road safety data

M4 road accidents by year

Collisions and casualties in M4, 1979 to 2025

Collisions in M4 peaked at 129 in 1989; 2025 had 22.

  • Collisions
  • Collisions in 2025: 22
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20252225
20242750
20232839
20223138
20213646
20202226
20194660
20183641
20174863
20162730
20152943
20144964
20134260
20126488
20115991
20105673
20096795
200865103
200791130
2006100142
200596141
2004110180
200396145
2002112174
200195143
200099146
199984128
1998103148
199792128
199699147
199591117
199495139
1993106143
1992102130
199192117
1990115146
1989129155
198899137
1987111134
19868595
198598131
1984104128
198388109
19827796
198189112
198091107
197996111

Map of recent crashes in M4

Map of the 24 most recent crashes in M4

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in M4

The 24 most recent collisions in M4 happened between 19 December 2024 and 27 December 2025.

Severity

Crashes by road in M4

The A665 has the most collisions in M4, 782 of 3,599 (22%), followed by the A62 (457).

Collisions in M4 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA6657821,069691
2ndA62457654745
3rdA664402555446
4thA6042308394242
5thA6164228018
6thA662120200016
7thA563300
8thA6553500

Council areas covering M4

Collisions in M4 were recorded in 2 council areas. Manchester has 3,588 of 3,599 (99.7%).

Collisions in M4 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stManchester3,5884,88130424
2ndSalford5700

Town in M4

All 3,599 collisions in M4 were in Manchester.