Jeep Wrangler Unlimited Diesel
Problems & Worst Years
Every reported problem for the Jeep Wrangler Unlimited Diesel, model year by model year — ranked from 540 federal NHTSA complaints across 2021–2022.
Diesel power doesn't spare the Wrangler Unlimited from the platform's signature steering complaint. In 2021, the diesel's first year in this data, death wobble accounted for a striking share of the 549 total complaint occurrences — 209 under one title and another 128 under a near-identical one, together representing well over half of everything reported that year. A recall-issues-with-electrical-system complaint added 68 occurrences and a high-voltage battery defect logged 65, both high-severity, alongside a lower-volume complaint about loss of power and motive function.
The 2022 model year shows a much wider spread of problems — 37 distinct issues against just 162 total occurrences — but the same themes persist at smaller scale: death wobble (15), general recall issues (14), steering and suspension malfunction (12), death wobble at highway speeds again (12), and battery issues leading to loss of power (11). Five problems that year carried a safety-severity tag, one more than 2021 despite the far lower volume.
No recall campaigns are listed against either model year in the data provided, despite the diesel Unlimited's complaints repeatedly referencing "recall issues" by name — worth asking a dealer directly whether a factory remedy has since been issued that simply isn't reflected here.
Between the two years, 2021 is clearly the one with heavier volume and a more concentrated steering problem, while 2022 spreads its issues more thinly but keeps a comparable safety-severity footprint. A buyer considering either year should prioritize a steering-feel test at highway speed and a check of the 12-volt and high-voltage battery systems over anything cosmetic, and should remember that complaint counts here reflect what owners chose to file with NHTSA rather than a certified failure rate — a documented service history and confirmed repair work matter more than the model year on its own.
Jeep Wrangler Unlimited Diesel problems by year
Complaint volume by model year (bar = relative to the worst year). Theworst yearsare the most-complained-about, weighted by safety-risk problems.
| Year | Complaint volume | Problems | Safety / High | Most common problem |
|---|---|---|---|---|
| 2021worst | 420 | 21 | 4/7 | Death Wobble Steering · 209 complaints |
| 2022worst | 120 | 37 | 5/16 | Death Wobble Steering · 15 complaints |
Data source: U.S. National Highway Traffic Safety Administration (NHTSA) owner complaints and recalls, 2021–2022. Problem clustering and year rankings are derived from the complaint record; complaint volume reflects reports filed, not total incidence or fault rate. Vehicle image is illustrative.