1984 Jeep J-10 Pickup Specs
4 powertrain configurations on federal record for the 1984 Jeep J-10 Pickup: 4.2L 6-cyl Regular Gasoline; 5.9L 8-cyl Regular Gasoline, rated up to 17 MPG combined by the EPA.
Source: EPA federal records (fueleconomy.gov) · Updated 2026-10-26 · By CarWhere Research
| Engine | Transmission | Drivetrain | City | Highway | Combined |
|---|---|---|---|---|---|
| 4.2L 6-cyl Regular Gasoline | Automatic 3-spd | 4-Wheel or All-Wheel Drive | 15 | 19 | 17 |
| 4.2L 6-cyl Regular Gasoline | Manual 4-spd | 4-Wheel or All-Wheel Drive | 15 | 17 | 16 |
| 5.9L 8-cyl Regular Gasoline | Automatic 3-spd | 4-Wheel or All-Wheel Drive | 10 | 12 | 11 |
| 4.2L 6-cyl Regular Gasoline | Automatic 3-spd | 4-Wheel or All-Wheel Drive | 15 | 19 | 16 |
J-10 Pickup by year
Buying a used J-10 Pickup? Specs are the easy half.
then check the specific car: the Full VIN Report shows that VIN's factory build, recall record, and market history before you pay for it.
Frequently asked questions
What engines does the 1984 Jeep J-10 Pickup have?
2 engines on federal record: 4.2L 6-cyl Regular Gasoline; 5.9L 8-cyl Regular Gasoline, offered with Automatic 3-spd, Manual 4-spd and 4-Wheel or All-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 1984 Jeep J-10 Pickup get?
EPA combined ratings run 11–17 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 1984 Jeep J-10 Pickup overall. For one specific vehicle — its exact engine, trim, factory options, and original window sticker — decode the 17-character VIN free at carwhere.com/tools/vin-decoder.
Where does this data come from?
The U.S. EPA's public vehicle dataset (fueleconomy.gov) — the federal record of every US-market configuration since 1984 — refreshed 2026-10-26. Public-domain data; republish with attribution to CarWhere (carwhere.com).