Raw Data for door openability study in NHTSA crash tests, 1979-1991


The Raw Numbers:
This is a long read.

1979 Model Year
30 vehicles tested, 28 had operability data available. 20 two-door, 8 four-door.

Driver door DOI: 50% - 10 operable, 8 difficult, 10 jammed
Passenger door DOI: 46% -  11 operable, 4 difficult, 13 jammed
Rear left door DOI: 63% - 4 operable, 2 difficult, 2 jammed
Rear right door DOI: 63% - 4 operable, 2 difficult, 2 jammed

All doors jammed on 7 of 30 vehicles (23%)
All doors easily operable on 9 of 30 vehicles (30%)

1980 Model Year
22 vehicles tested, 17 had operability data available – 9 two-door, 8 four-door.

Driver door DOI: 41% - 7 operable, 10 jammed
Passenger door DOI: 50% - 6 operable, 5 difficult, 6 jammed
Rear left door DOI: 50% - 2 operable, 4 difficult, 2 jammed
Rear right door DOI: 50% - 3 operable, 2 difficult, 3 jammed

All doors jammed on 4 of 17 vehicles (24%)
All doors easily operable on 6 of 17 vehicles (35%)

1981 Model Year – LIMITED DATA
13 vehicles tested, 10 had operability data available – 5 two-door, 5 four-door.
Note: for one of the four-door vehicles, operability data was only available for the front doors.

Driver door DOI: 15% - 1 operable, 1 difficult, 8 jammed
Passenger door DOI: 10% - 2 difficult, 8 jammed
Rear left door DOI: 50% - 2 operable, 2 jammed
Rear right door DOI: 63% - 2 operable, 1 difficult, 1 jammed

All doors jammed on 4 of 9* vehicles (44%)
All doors easily operable on 0 of 9* vehicles (0%)

* The number given is the number of vehicles with enough information (normally the number of vehicles with data for all doors). This recurs in some later model years.


1982 Model Year
28 vehicles tested, 24 had operability data available – 7 two-door, 17 four-door.
Note: for 4 of the 17 four-door vehicles, operability data was only available for the front doors.

Driver door DOI: 27% - 4 operable, 5 difficult, 15 jammed
Passenger door DOI: 21% - 3 operable, 4 difficult, 17 jammed
Rear left door DOI: 38% - 3 operable, 4 difficult, 6 jammed
Rear right door DOI: 35% - 2 operable, 5 difficult, 6 jammed

All doors jammed on 7 of 20 vehicles (35%)
All doors easily operable on 3 of 20 vehicles (15%)

1983 Model Year – LIMITED DATA
22 vehicles tested, only 9 had operability data available – 3 two-door, 6 four-door.

Driver door DOI: 33% - 3 operable, 6 jammed
Passenger door DOI: 33% - 3 operable, 6 jammed
Rear left door DOI: 100% - all 6 operable
Rear right door DOI: 83% - 5 operable, 1 jammed

All doors jammed on 2 of 9 vehicles (22%)
All doors operable on 2 of 9 vehicles (22%)

1984 Model Year
38 vehicles tested, 36 had operability data available. 21 two-door, 15 four-door.
Note: for 2 of the 15 four-door vehicles, operability data was only available for the front doors.

Driver door DOI: 47% - 17 operable, 19 jammed
Passenger door DOI: 53% - 19 operable, 17 jammed
Rear left door DOI: 77% - 10 operable, 3 jammed
Rear right door DOI: 85% - 11 operable, 2 jammed

All doors jammed on 8 of 35 vehicles (23%)
All doors operable on 14 of 35 vehicles (39%)


1985 Model Year
30 vehicles tested, all had operability data available. 14 two-door, 1 three-door (van), 15 four-door.
Note: for one of the 15 four-door vehicles, operability data was only available for the front doors.

Driver door DOI: 38% - 11 operable, 1 difficult, 18 jammed
Passenger door DOI: 37% - 10 operable, 2 difficult, 18 jammed
Rear left door DOI: 64% - 9 operable, 5 jammed
Rear right door DOI: 80% - 12 operable, 3 jammed

All doors jammed on 8 of 29 vehicles (28%)
All doors operable on 8 of 29 vehicles (28%)


1986 Model Year
27 vehicles tested, all had operability data available. 13 two-door, 14 four-door.

Driver door DOI: 59% - 16 operable, 11 jammed
Passenger door DOI: 56% - 15 operable, 12 jammed
Rear left door DOI: 93% - 13 operable, 1 jammed
Rear right door DOI: 86% - 12 operable, 2 jammed

All doors jammed on 4 of 27 vehicles (15%)
All doors operable on 14 of 27 vehicles (52%)

1987 Model Year
37 vehicles tested, all have operability data available – 25 two-door, 12 four-door.

Driver door DOI: 49% - 18 operable, 19 jammed
Passenger door DOI: 57% - 21 operable, 16 jammed
Rear door DOI: 100% - 12 operable
Rear right door DOI: 92% - 11 operable, 1 jammed

All doors jammed on 8 of 37 vehicles (22%)
All doors operable on 15 of 37 vehicles (41%)

1988 Model Year
36 vehicles tested, 35 had operability data available. 21 two-door, 14 four-door.

Driver door DOI: 56% - 19 operable, 1 difficult, 15 jammed
Passenger door DOI: 51% - 17 operable, 2 difficult, 16 jammed
Rear left door DOI: 86% - 12 operable, 2 jammed
Rear right door DOI: 86% - 12 operable, 2 jammed

All doors jammed on 8 of 35 vehicles (23%)
All doors easily operable on 15 of 35 vehicles (43%)

1989 Model Year
36 vehicles tested, 32 had operability data available – 11 two-door, 3 three-door, 18 four-door.

Driver door DOI: 53% - 17 operable, 15 jammed
Passenger door DOI: 63% - 20 operable, 12 jammed
Rear left door DOI: 83% - 15 operable, 3 jammed
Rear right door DOI: 81% - 17 operable, 4 jammed

All doors jammed on 4 of 32 vehicles (13%)
All doors operable on 15 of 32 vehicles (47%)

1990 Model Year
34 vehicles tested, all had operability data available. 19 two-door, 15 four-door.

Driver door DOI: 88% - 30 operable, 4 jammed
Passenger door DOI: 79% - 27 operable, 7 jammed
Rear left door DOI: 87% - 13 operable, 2 jammed
Rear right door DOI: 100% - 15 operable

All doors jammed on 3 of 34 vehicles (9%)
All doors operable on 26 of 34 vehicles (76%)

1991 Model Year
33 vehicles tested, 31 had operability data available – 6 two-door, 2 three-door, 23 four-door

Driver door DOI: 63% - 19 operable, 1 difficult, 11 jammed
Passenger door DOI: 60% - 18 operable, 1 difficult, 12 jammed
Rear left door DOI: 87% - 20 operable, 3 jammed
Rear right door DOI: 84% - 21 operable, 4 jammed

All doors jammed on 3 of 31 vehicles (10%)
All doors easily operable on 16 of 31 vehicles (52%)

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