2015 Lincoln Mkz: what breaks, and at what mileage

The failures owners actually file about

Owners have reported 36 named failure modes on the 2015 Lincoln Mkz, and the three most-reported carry 20% of everything filed, which is an unusually even spread for one model year.

Seat belt or retractor failure leads with 7 reports and about 0.1 per 1,000 vehicles.

Air conditioning failure follows with 7 reports, median 20,000 miles.

Other electrical problem follows with 7 reports, median 25,000 miles.

By system, the reports fall mostly into brakes (15), engine (14) and electrical (13).

How bad it is when it goes

Across the named modes, 5 mention a crash. 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 4.11, 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: seat belt or retractor failure at $200–$900, air conditioning failure at $400–$2,800, other electrical problem at $250–$2,000 and other brake problem at $300–$1,800. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.

22% 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 2015 Lincoln Mkz draws about 0.8 per 1,000 vehicles, which puts it in the 73rd percentile of complaint rates among 2015 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 130,198 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 2015 vehicles, which is what the risk score uses, is far more robust than the rate itself.

Recalls on the 2015 model year

NHTSA has issued 11 recall campaigns covering the 2015 Lincoln Mkz, affecting an estimated 624,713 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 back over prevention: sensing system: camera, service brakes, hydraulic:foundation components:hoses, lines, service brakes, hydraulic:pedals and linkages and exterior lighting:headlights. 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.

One caution about reading these together: a recall usually raises the complaint count for the same part, because owners who read about it go and file. The mileages stay informative; the counts get noisy.

Where 2015 sits in the model line

High risk for a 2015 — 210th riskiest of the 273 2015 vehicles we can rate. Because the ranking is against the same model year only, age cancels out of it.

Across the 13 model years of this car that carry enough reports to score, 2018 comes out best at 64 and 2019 worst at 73, with 2015 itself at 67.

If the model year is negotiable, 2018 and 2007 score lower than 2015 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 2013–2016 generation specifically, 2014 is the strongest year at 66 and 2016 the weakest at 71.

What this page cannot tell you

107 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 107 reports, 56 carried an odometer reading, so the mileages here describe 52% 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".

The failure modes are assigned by software reading the owner's own words, which is accurate in bulk and wrong in individual cases. A mode with a handful of reports may contain a misfiled one.

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.