Of the 11 MKZ model years with a verified US sales figure (2008–2018), only one drew enough complaints to be ranked against the others.
Median across these years: 0.40 per 1,000 sold in the first three years. A model year well above its own nameplate’s median is the signal worth acting on.
Each model year with a verified denominator. Follow a year for what owners reported about it.
| Model year | Per 1,000 | Complaints | Most-reported part |
|---|---|---|---|
| 2013 | 0.89 | 27 | Electrical System 11% |
| 2017 | 0.55 | 16 | Engine 36% |
| 2014 | 0.54 | 18 | Steering 16% |
| 2015 | 0.46 | 15 | Electrical System 15% |
| 2016 | 0.42 | 13 | Service Brakes 16% |
| 2010 | 0.40 | 9 | Air Bags 49% |
| 2012 | 0.36 | 10 | Air Bags 33% |
| 2018 | 0.30 | 7 | Engine 28% |
| 2008 | 0.17 | 5 | Air Bags 52% |
| 2011 | 0.16 | 4 | Air Bags 38% |
| 2009 | 0.11 | 3 | Air Bags 51% |
Safety complaints owners filed with NHTSA in each model year’s first three years on the road, divided by how many were sold, so a year that sold twice as many cars is not penalised for it.
Too few owners filed complaints about them to rank them. Few reports is not the same as a good year, so those years are left out of best and worst.