2003 Lincoln Navigator Engine Problems
- Complaints
- 4about this part
- Share
- 3%of 127 total for the year
- Median mileage
- 93,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2003 Lincoln Navigator, 3% of the 127 complaints for this model year. Where a mileage was given, the median is 93,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“We were driving down the highway at approximately 70mph, when I heard a loud pop and clanking noise on the driver's side front engine area. I was driving with my whole family in the SUV. We were able to still drive it to a mechanic. The mechanic diagnosed it as a blown-out spark plug . He said the spark plug had come out of the engine block. He said it is a common problem on that engine and there was a spark plug kit for it. He used the kit, and it only held for about 2 months. It now has lost power, shakes, and poor gas mileage. The repair kit obviously is not ample for this problem.”
NHTSA complaint #10668927, filed 2014-12, 159,000 miles“Coming home from a trip engine started to misfire. Come to find out the # 3 spark plus exploded destroying the coil and and threads holding the spark plug in. Causing the need to re tap the threads.”
NHTSA complaint #10874720, filed 2016-06, 107,000 miles“The contact owns a 2003 Lincoln Navigator. The contact stated while driving 35 MPH, there was an abnormal sound coming from the engine compartment, prompting the contact to pull over to the shoulder of the roadway. The vehicle was towed to the residence. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the rocker arms, and that the engine lacked adequate compression in cylinders #2 and #3, resulting in engine damage. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. …”
NHTSA complaint #11610921, filed 2024-08, 75,000 milesEngine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 1 | 6% |
| 2023 | 1 | 14% |
| 2022 | 2 | 10% |
| 2021 | 8 | 24% |
| 2020 | 3 | 9% |
| 2019 | 11 | 13% |
| 2018 | 12 | 23% |
| 2017 | 1 | 3% |
| 2016 | 1 | 4% |
| 2015 | 4 | 19% |
| 2014 | 2 | 12% |
| 2013 | 2 | 14% |
| 2011 | 1 | 11% |
| 2010 | 2 | 13% |
| 2009 | 1 | 10% |
| 2008 | 1 | 3% |
| 2007 | 3 | 7% |
| 2006 | 9 | 15% |
| 2005 | 5 | 10% |
| 2004 | 2 | 2% |
| 2003 | 4 | 3% |
| 2002 | 2 | 6% |
| 2001 | 4 | 5% |
| 2000 | 1 | 1% |
| 1999 | 2 | 2% |
| 1998 | 3 | 2% |
Other parts of the 2003 Lincoln Navigator
38 complaintsElectrical system
22 complaintsBody and structure
18 complaintsAir bags
14 complaintsTransmission and drivetrain
13 complaintsVisibility (wipers, defrost, mirrors)
13 complaintsEngine cooling
10 complaintsBrakes
7 complaintsVehicle speed control
7 complaintsOther or unknown
5 complaintsEquipment
4 complaintsExterior lighting
3 complaints
← All problems reported for the 2003 Lincoln Navigator
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology