2018 Jeep Compass: what breaks, and at what mileage

The failures owners actually file about

Owners have reported 73 named failure modes on the 2018 Jeep Compass, and the three most-reported carry 32% of everything filed, which is an unusually even spread for one model year.

Other engine problem leads with 229 reports, about 8.4 per 1,000 vehicles and with the middle half of reports between 6k to 37,000 miles.

Other electrical problem follows with 155 reports, usually reported between 6k to 40,000 miles. 1 of those report mention a fire.

Parking brake failure follows with 134 reports, usually reported between 9k to 35,000 miles.

By system, the reports fall mostly into engine (509), electrical (239) and brakes (163).

Severity, and what it costs

Across the named modes, 42 mention a crash, 7 a fire and 18 an injury. Those are the words owners used in their own complaints, and NHTSA does not verify them, but they are the closest thing in this data to a measure of what a failure actually did.

The average severity weight across every report on this year is 3.48, where a stalled engine or a failed airbag weighs many times more than a rattling trim panel, and a figure this high means the reports are dominated by failures with safety consequences rather than annoyances. The weighting is set out in full on the methodology page.

What the top failures cost to put right, as editorial estimates for an independent US shop rather than figures from NHTSA: other engine problem at $300–$4,000, other electrical problem at $250–$2,000, parking brake failure at $250–$1,300 and excessive oil consumption at $900–$6,500. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.

40% of the reports on this year sit in the engine, transmission, drivetrain or cooling systems — the four where a repair bill is usually four figures.

How often, against how many were built

Scaled by an estimate of how many of these cars exist, the 2018 Jeep Compass draws about 60 per 1,000 vehicles, which puts it in the 97th percentile of complaint rates among 2018 vehicles we can rate.

That denominator is the weakest number on the page and it is fair to say so plainly. Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound.

The working figure is 27,210 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 2018 vehicles, which is what the risk score uses, is far more robust than the rate itself.

Recalls on the 2018 model year

NHTSA has issued 6 recall campaigns covering the 2018 Jeep Compass, affecting an estimated 69,337 vehicles. A recall is a different kind of evidence from a complaint: it is the regulator and the manufacturer agreeing that something has to be fixed, and the fix is free for as long as the car exists.

The campaigns cover service brakes, hydraulic:foundation components:disc:caliper, electrical system:wiring:front underhood, suspension:front:control arm:lower arm and air bags:frontal:passenger side:inflator module. Whether the work was actually done on the car in front of you is a question only the VIN can answer, and the manufacturer or NHTSA will answer it free.

Recalls also distort complaint counts. Publicity about a campaign reminds owners that complaining is possible, so reports for a recalled component often spike after the recall rather than before it.

Where 2018 sits in the model line

Severe risk for a 2018 — 19th riskiest of the 251 2018 vehicles we can rate. Every score on this site is a rank inside its own model year, which is what makes a 2004 and a 2019 comparable at all.

Across the 19 model years of this car that carry enough reports to score, 2008 comes out best at 58 and 2018 worst at 82, with 2018 itself at 82.

If the model year is negotiable, 2008, 2021, 2025, 2010, 2015, 2013, 2012, 2007, 2023, 2011, 2009, 2014, 2024, 2020, 2019, 2016, 2022 and 2017 score lower than 2018 by a margin worth acting on. Same body, same engines, different luck — usually a supplier change or a mid-cycle fix, which the complaint data can show but never explain.

Within the 2016–2022 generation specifically, 2021 is the strongest year at 60 and 2018 the weakest at 82.

What the numbers say to check

The mileages below are where the first quarter of reports for each mode had already been filed, which makes them the point at which a fault is worth looking for rather than the point at which it happens: other lighting problem from about 58, backup camera failure from about 200, other brake problem from about 600 and infotainment screen failure from about 3k.

On a 2018 Jeep Compass with more miles than that on it, the useful question to put to a seller or a mechanic is whether other lighting problem has been dealt with, and if so with what parts and at whose expense. A car that has already had the repair is in a different position from one that has not.

None of this is a diagnosis. It is a list of what other owners of the same model year reported, ordered by when they reported it, which is a good place to point an inspection and a poor place to stop.

The limits of complaint data

1,631 owner reports; fleet size estimated from this year's own recall paperwork. Every count on this page is therefore a floor: it is the number of owners who went to the trouble of filing with a federal agency, which is a small and self-selected fraction of the owners who had the fault.

Of those 1,631 reports, 783 carried an odometer reading, so the mileages here describe 48% of the sample rather than all of it. Owners also round: readings pile up on multiples of ten thousand, which is why this site publishes "about 90,000 miles" and not "91,438".

Named failure modes come from matching phrases in the complaint text, so a badly worded complaint can land in the wrong bucket. The effect washes out across hundreds of reports and does not wash out across five.

And nothing here predicts what one car will do. These are other people's complaints, filed years apart, on cars maintained by strangers. Read the page as a map of where this model year has previously gone wrong, then have the specific car in front of you inspected.