International Harvester

114 model lines · 247 recall campaigns · 204 complaints · 6 investigations · reports filed by NAVISTAR INTL CORP.; INTERNATIONAL TRUCK AND ENGINE

International Harvester has 114 model lines on NHTSA's register (model years 1962–2001), with 247 recall campaigns and 204 consumer complaints.

Campaigns were most numerous in 2001 (13). The component complaints name most often is service brakes, hydraulic (134.1 per 1,000 component mentions). The School Bus line has the most complaints, 42 over 18 model years.

A further 4 equipment, tire or child-seat campaigns name International Harvester and are listed on monthly pages. Comparisons here are between International Harvester model lines; complaint counts across makes depend on fleet size and reporting rates and are not compared.

Complaints are consumer reports and have not been verified by NHTSA.

Model lines

Ordered by total complaints. "Per model year" divides complaints by the number of model years on the register, a comparison within International Harvester only.

Model line	Model years	Campaigns	Complaints	Per model year	Most-reported component
School Bus	18	4	42	2.3	Power Train
3800	22	15	41	1.9	Engine and Engine Cooling
4700	11	14	40	3.6	Service Brakes, Hydraulic
4900	10	8	20	2.0	Service Brakes, Air
International Harvester	17	16	11	0.6	Service Brakes, Hydraulic
9400	13	11	8	0.6	Tires
9300	14	11	7	0.5	Engine and Engine Cooling
9200	8	10	6	0.8	Steering
3000	13	7	5	0.4	Structure
9370	4	4	3	0.8	Power Train
9800	3	2	3	1.0	Power Train
9000	5	8	2	0.4	Service Brakes, Hydraulic
9400I	6	4	2	0.3	Service Brakes, Air
1000	13	2	2	0.2	Power Train
9100	6	2	2	0.3	Service Brakes, Hydraulic
3400	3	3	2	0.7	Service Brakes, Hydraulic
Loadstar Series	14	20	1	0.1	Steering
FE	10	7	1	0.1	Service Brakes, Air
5000	8	10	1	0.1	Suspension
8100	10	9	1	0.1	Service Brakes, Air
Scout Series	10	7	1	0.1	Tires
2574	5	4	1	0.2	Service Brakes, Hydraulic
9000I	4	3	1	0.3	Trailer Hitches
8300	4	2	1	0.3	Power Train
Cargostar Series	17	17	0	0.0
3600	20	11	0	0.0
1853	18	9	0	0.0
S Series	13	14	0	0.0
S1700	9	10	0	0.0
S1900	9	10	0	0.0
S1800	9	10	0	0.0
1753	14	4	0	0.0
4000	13	10	0	0.0
1723	14	4	0	0.0
1823	14	3	0	0.0
3700	15	5	0	0.0
Fleetstar Series	9	12	0	0.0
Loadstar	13	14	0	0.0
RE	10	7	0	0.0
Paystar Series	10	11	0	0.0
Transtar Series	10	11	0	0.0
3900FC	16	6	0	0.0
8000	4	8	0	0.0
Conco Series	7	5	0	0.0
2000	4	8	0	0.0
IC	13	4	0	0.0
S1600	8	4	0	0.0
9200I	6	6	0	0.0
4300	7	10	0	0.0
4800	10	6	0	0.0
9670	9	5	0	0.0
D400	6	4	0	0.0
S2100	9	2	0	0.0
1800	6	8	0	0.0
CO4000	6	3	0	0.0
1600	6	7	0	0.0
CO4070	8	3	0	0.0
1700	4	7	0	0.0
DC400	6	3	0	0.0
S2500	7	3	0	0.0
1724	10	2	0	0.0
1754	10	2	0	0.0
1824	10	2	0	0.0
183RE	10	2	0	0.0
1854	10	2	0	0.0
1925	10	2	0	0.0
S2200	7	2	0	0.0
1010	5	8	0	0.0
1110	5	7	0	0.0
4400	2	7	0	0.0
CO1610	5	2	0	0.0
CO1710	5	2	0	0.0
CO1810	5	2	0	0.0
Fleetstar	7	6	0	0.0
1900	2	5	0	0.0
3900	6	2	0	0.0
CO7044	7	2	0	0.0
RE Bus	8	2	0	0.0
1210	5	5	0	0.0
5000I	4	4	0	0.0
9600	6	3	0	0.0
4200	5	3	0	0.0
500	6	4	0	0.0
9100I	6	2	0	0.0
700	4	2	0	0.0
8200	4	4	0	0.0
900	4	2	0	0.0
CE	3	2	0	0.0
M1500	3	2	0	0.0
MA1500	3	2	0	0.0
1000D	3	3	0	0.0
1310	4	3	0	0.0
1510	4	2	0	0.0
1603	2	5	0	0.0
1703	2	5	0	0.0
1803	2	5	0	0.0
Paystar	3	3	0	0.0
S2600	4	2	0	0.0
200	2	3	0	0.0
F230	2	2	0	0.0
M623	2	2	0	0.0
MS1210	3	2	0	0.0
Transtar	3	3	0	0.0
100	2	2	0	0.0
1000B	1	3	0	0.0
1000C	2	2	0	0.0
7400	1	3	0	0.0
DCF400	2	2	0	0.0
M42	2	2	0	0.0
Travelall	2	2	0	0.0
4700 4X2	1	2	0	0.0
4700 LP	1	2	0	0.0
4700 LPX	1	2	0	0.0
M412	1	2	0	0.0

Campaigns by year

Distinct NHTSA campaigns naming International Harvester vehicles, by year the report was received.

Complaints by year

Complaints about International Harvester vehicles by year received.

Components most reported

Service Brakes, Hydraulic134.1

Engine and Engine Cooling108.7

Service Brakes, Air108.7

Steering101.4

Power Train94.2

Structure76.1

Visibility58

Tires47.1

Electrical System47.1

Suspension43.5

Per 1,000 component mentions across all International Harvester complaints.

Questions and answers

How many recalls has International Harvester had?

247 NHTSA recall campaigns name International Harvester vehicles (model years 1962–2001). Units potentially affected across those campaigns total about 2,726,622, a figure that includes other makes where a campaign is shared (Takata air bag inflators, for example). Campaigns naming several model lines count once.

Which International Harvester model line has the most complaints?

School Bus: 42 complaints over 18 model years (2.3 per model year). Larger-selling lines draw more complaints; the per-model-year column controls for the number of years, not for sales.

What components are reported most for International Harvester?

service brakes, hydraulic (134.1 per 1,000 mentions), engine and engine cooling (108.7 per 1,000 mentions), service brakes, air (108.7 per 1,000 mentions). Complaints are consumer reports and have not been verified by NHTSA.

Where does this data come from?

NHTSA Office of Defects Investigation flat files, public domain, dated 24 Sep 2026 (recalls) and 15 May 2019 (complaints).

Provenance

Source: NHTSA Office of Defects Investigation flat files, public domain, dated 24 Sep 2026 and 15 May 2019. Make names are as NHTSA records them. Comparisons are within this make; see the methodology for why makes are not ranked against each other.