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American make · Discontinued

Mercury Car Guide: Common Problems, Maintenance & Best Used Models

What Mercury owners report most, model by model, drawn from 7,683 complaints filed with the U.S. safety regulator. Plus recalls, a service schedule and the model years to check carefully.

Data as of 2003 to 2011 model years

Quick facts

Mercury

Origin
American
Status
No longer sold new in the U.S.
Most complaints
Milan (2,519)
Most-reported area
Powertrain
Busiest model year
2010 (1,378 complaints)
owner complaints on file with NHTSA
7,683
models with at least one complaint
12
of complaints mention powertrain
17%
recall campaigns covering the Milan
15

01Common problems by model

Mercury Common Problems by Model

The 8 Mercury models with the most owner complaints, and the part of the car each complaint was about.

Mercury models with the most NHTSA complaints, 2003 to 2011 model years
ModelComplaintsMost-reported areasModel year with the mostRecalls
Milan2,519Airbags and brakes2010 (1,003)15
Grand Marquis1,575Exterior lighting and electrical system2005 (488)7
Mariner1,296Steering and powertrain2008 (461)7
Mountaineer757Powertrain and body structure2004 (210)4
Monterey453Powertrain and body structure2004 (283)6
Sable418Speed control and powertrain2003 (201)6
Montego259Powertrain and speed control2005 (135)3
Mariner Hybrid211Engine and brakes2008 (116)0
Source: NHTSA complaints and recalls databases, read on October 12, 2026. Complaints are reports filed by owners and are not verified by NHTSA. Counts are not adjusted for how many of each model were sold, so best-selling models appear higher.

The Milan leads with 2,519 complaints, most of them about airbags and brakes. That does not make it the worst Mercury. A model that sells in large numbers collects more reports, and these counts are not adjusted for sales.

Use the table to know where to look. If you own or are buying one of these models, ask about the area in the third column first, and price the repair with the repair cost estimator.

02Problem areas

Where Mercury Problems Concentrate

Every Mercury complaint names the part of the vehicle involved. These are the areas named most often across all 12 models.

By part of the vehicle

  1. Powertrain1,272 · 17%
  2. Steering1,198 · 16%
  3. Airbags1,020 · 13%
  4. Exterior lighting992 · 13%
  5. Brakes908 · 12%
  6. Speed control855 · 11%

One complaint can name more than one area, so the shares add up to more than 100%.

By model year

  1. 2003808
  2. 2004935
  3. 2005974
  4. 2006705
  5. 2007718
  6. 20081,264
  7. 2009614
  8. 20101,378
  9. 2011287

Recent model years have had less time to gather complaints, so a short bar at the bottom is not yet good news.

03Best and worst used models

Mercury Model Years to Check Carefully

The model years of each popular model that drew the most complaints. Start your questions there when you shop used.

How to choose a used car

  • 2,519 complaints

    Mercury Milan

    1. 20101,003 complaints
      13 recalls
    2. 2008451 complaints
      5 recalls
    3. 2007434 complaints
      5 recalls

    Mostly about airbags and brakes.

  • 1,575 complaints

    Mercury Grand Marquis

    1. 2005488 complaints
      5 recalls
    2. 2003362 complaints
      2 recalls
    3. 2004348 complaints
      2 recalls

    Mostly about exterior lighting and electrical system.

  • 1,296 complaints

    Mercury Mariner

    1. 2008461 complaints
      4 recalls
    2. 2009315 complaints
      2 recalls
    3. 2010270 complaints
      3 recalls

    Mostly about steering and powertrain.

  • 757 complaints

    Mercury Mountaineer

    1. 2004210 complaints
      1 recall
    2. 2003152 complaints
      1 recall
    3. 2006117 complaints
      2 recalls

    Mostly about powertrain and body structure.

A year with many complaints is one to inspect closely, not one to rule out. The fault may have been fixed under recall, and a well-maintained car from a busy year can be a better buy than a neglected one from a quiet year.

Before you buy any used Mercury, decode the VIN, check it for open recalls and follow the inspection checklist. A complaint count cannot tell you about the one car in front of you.

04Recalls

Mercury Recalls by Model

The number of safety recall campaigns that cover each model, with the most recent ones listed.

  • Mercury Milan recalls

    15

    recall campaigns, 2006 to 2011 model years

    1. Mar 10, 2021Airbags: frontal21V158000
    2. Feb 16, 2021Airbags: frontal21V081000
    3. Feb 16, 2021Airbags: frontal21E013000
    4. Dec 18, 2019Hydraulic brakes: antilock/traction control/electronic limited slip19V904000
    5. Jan 7, 2019Airbags: frontal19V001000

  • Mercury Grand Marquis recalls

    7

    recall campaigns, 2003 to 2011 model years

    1. Dec 22, 2015Exterior lighting: headlights15V861000
    2. Nov 5, 2014Steering: rack and pinion14V704000
    3. Aug 29, 2013Steering13V385000
    4. Jun 26, 2007Suspension: front07V270000
    5. Nov 15, 2006Visibility: windshield06V440000

  • Mercury Mariner recalls

    7

    recall campaigns, 2005 to 2011 model years

    1. Oct 26, 2016Fuel system: delivery16V777000
    2. Sep 29, 2015Powertrain: automatic transmission15V606000
    3. Jun 3, 2015Suspension: front15E045000
    4. Sep 3, 2014Hybrid system14V526000
    5. May 29, 2014Steering: electric power assist system14V284000

  • Mercury Mountaineer recalls

    4

    recall campaigns, 2003 to 2010 model years

    1. Apr 20, 2010Seats: front assembly10V161000
    2. Dec 11, 2007Visibility: glass, side/rear07E104000
    3. Sep 26, 2007Powertrain: automatic transmission07V453000
    4. Nov 9, 2005Visibility: windshield wiper/washer05V520000
Check your VIN at NHTSA

A recall is free to have repaired at a dealer of the parent manufacturer. The lookup shows only the recalls still open on your vehicle.

05Maintenance schedule

Mercury Maintenance Schedule

Typical service intervals for a gasoline Mercury. Your owner’s manual has the exact figures for your engine.

Build a schedule for your mileage
Typical maintenance intervals for a Mercury
ServiceTypical intervalGood to know
Engine oil and filter5,000 to 10,000 milesFull synthetic sits at the long end. Short trips and towing shorten it.
Tire rotation5,000 to 8,000 milesEasiest to do at every oil change.
Cabin air filter15,000 to 30,000 milesSooner in dusty or high-pollen areas.
Engine air filter15,000 to 30,000 milesInspect at every oil change and replace when dirty.
Brake fluidEvery 2 years or 30,000 milesIt absorbs moisture with age, whatever the mileage.
Transmission fluid30,000 to 60,000 milesVaries widely, and some manuals allow longer. Use only the specified fluid.
Engine coolant30,000 to 60,000 milesLong-life coolants can go further. Never mix types.
Drive belt inspection60,000 to 100,000 milesReplace at the first cracks, fraying or squeal.
Timing belt, if fitted60,000 to 100,000 milesEngines with a timing chain do not have this service.
Spark plugs30,000 to 100,000 milesCopper plugs wear fastest. Iridium and platinum last longest.
Typical intervals drawn from AAA's maintenance guidance, not Mercury's own schedule. Follow the schedule in your owner's manual, and use its severe-service intervals if you tow, make short trips or drive in extreme heat or cold.
Maintenance by mileageOil change calculatorWhat each service costs

06Manufacturer OBD2 codes

Mercury OBD2 Codes

How to read the codes a Mercury stores, and why some of them mean something different on another make.

A Mercury stores two kinds of trouble code. Generic codes, which have 0 as their second character, mean the same thing on every make: P0420 is a catalyst efficiency fault on a Mercury exactly as it is on any other car. Manufacturer-specific codes, which have 1 as their second character, are defined by Mercury and can mean something different elsewhere.

We do not publish a list of Mercury’s own P1 codes, because we could not verify one against Mercury’s service information. For a P1 code, use a scanner that reads Mercury codes, or ask a specialist to look it up.

Free toolLook up a generic codeMeaning, common causes and whether it is safe to keep driving.
How OBD2 code types work

07Related guides and tools

Next steps for Mercury owners and buyers.

Guides

Free tools

All car brandsUsed car buying guide

08Questions

Mercury: common questions.

What are the most common Mercury problems?

Among 2003 to 2011 model-year Mercury vehicles, the areas owners report most often to NHTSA are powertrain (17% of complaints), steering (16% of complaints) and airbags (13% of complaints). A complaint is an owner's report, not a confirmed defect.

Which Mercury model has the most complaints?

The Milan, with 2,519 complaints on file for 2003 to 2011 model years. Its 2010 model year has the most, at 1,003. Popular models attract more complaints simply because more of them are on the road.

How do I check a Mercury for recalls?

Enter the 17-character VIN in NHTSA's recall lookup at nhtsa.gov/recalls. It shows safety recalls that have not been repaired on that exact vehicle, and recall repairs are carried out by the manufacturer's dealers at no charge.

How often does a Mercury need servicing?

Most gasoline cars need an oil change and tire rotation every 5,000 to 10,000 miles, filters every 15,000 to 30,000 miles and brake fluid every two years. Your Mercury owner's manual gives the exact schedule for your engine.

Is Mercury still sold in the United States?

No. Mercury is no longer sold new in the United States, so every Mercury on the market is a used car. Check its history, its recalls and its condition carefully before you buy.

09About this guide

Where the figures come from.

Every count on this page comes from records published by the National Highway Traffic Safety Administration and was read on . We count the records. We do not reproduce owners’ statements, and we do not rate or rank models ourselves.

CarTipsMentor is not affiliated with, sponsored by or endorsed by Mercury. The Mercury name and logo belong to their owner and are used only to identify the make. Full disclaimer.

Sources

  1. [1]National Highway Traffic Safety Administration, Vehicle owner complaints database
  2. [2]National Highway Traffic Safety Administration, Safety recalls by vehicle
  3. [3]AAA Automotive, Time-Stamped Car Maintenance Checklist

Complaint counts cover 2003 to 2011 model years. Each complaint is counted once and assigned to the model named in the complaint. Counts change as new complaints are filed.