Lincoln Navigator 2003–2006
2nd generation · U228
NHTSA data through 13 August 2026459 complaints, 361 with mileageMethod
- Reports with mileage
- 361
- Median of reported failures
- 59,000 mi
- Most-reported system
- Suspension (20.0%)
- Recalls
- 0
Before-you-buy checklist ↓Check this VIN — NHTSA ↗
On this generation, 24% of complaints that record mileage fall within the first 12,000 miles, against 2 reports per 1,000 miles between 20,000 and 80,000.
Figure 1 · Lincoln Navigator 2003–2006 · 361 reports with mileage
Mileage at failure
Complaints per 10,000-mile bin, 0 to 200,000 miles, equal bins on a linear scale. Tallest bar = 83 complaints.
- First 12,000 miles — 24% of all failures
- Rest of the range
- Median
- 200,000+ — 3 complaints (0.8%), plotted separately
- 10%
- 500
- 25%
- 13,000
- Median
- 58,567
- 75%
- 100,000
- 90%
- 135,000
Show the numbers
| Mileage | Complaints | Share |
|---|---|---|
| 0–10,000 | 83 | 23.0% |
| 10,000–20,000 | 25 | 6.9% |
| 20,000–30,000 | 10 | 2.8% |
| 30,000–40,000 | 15 | 4.2% |
| 40,000–50,000 | 21 | 5.8% |
| 50,000–60,000 | 27 | 7.5% |
| 60,000–70,000 | 24 | 6.6% |
| 70,000–80,000 | 25 | 6.9% |
| 80,000–90,000 | 18 | 5.0% |
| 90,000–100,000 | 22 | 6.1% |
| 100,000–110,000 | 21 | 5.8% |
| 110,000–120,000 | 10 | 2.8% |
| 120,000–130,000 | 12 | 3.3% |
| 130,000–140,000 | 12 | 3.3% |
| 140,000–150,000 | 9 | 2.5% |
| 150,000–160,000 | 7 | 1.9% |
| 160,000–170,000 | 4 | 1.1% |
| 170,000–180,000 | 5 | 1.4% |
| 180,000–190,000 | 5 | 1.4% |
| 190,000–200,000 | 3 | 0.8% |
| 200,000+ | 3 | 0.8% |
Source: NHTSA Office of Defects Investigation, public domain. Complaint counts reflect what owners reported and are not a measure of failure rate per vehicle sold.
What this can and cannot tell you: these are complaints owners chose to file, not a failure rate. Popular models accumulate more of them simply by being common. How this is built.
Owners filed 459 complaints with NHTSA about the 2003–2006 Lincoln Navigator, and 361 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
24% of complaints that record mileage fall within the first 12,000 miles, against 2 reports per 1,000 miles between 20,000 and 80,000. Failures clustered that early usually indicate a design or manufacturing problem rather than wear.
The most-reported areas are the suspension (20.0% of complaints, typically around 75,000 miles), the electrical system (10.0% of complaints, typically around 56,000 miles), the airbag system (8.5% of complaints, typically around 95,000 miles).
If you arrived asking “is it reliable?” — this page answers the version of that question the data can support: which problems owners reported, and at what mileage.
How many miles does a 2003–2006 Lincoln Navigator last?
Half of the failure reports on the 2003–2006 Lincoln Navigator were filed by 59,000 miles and 90% by 135,000 miles — figures drawn from 361 NHTSA complaints that record an odometer reading, so they time reported failures, not the cars whose owners never filed one.
3 reports (0.8%) came in past 200,000 miles — each one proof a Navigator reached that mileage, not that it died there.
Before you buy a 2003–2006 Navigator: the 3-minute check
Generated from 361 mileage-tagged complaints, 3 documented problem areas. Print this page — the checklist survives print.
- Check air suspension on 2003–2006 cars. Air spring leaks, compressor failure and height-sensor faults continue; complaint volume is highest around MY2004.
- Check spark plugs (5.4l 3-valve) on 2005–2006 cars. The 3-valve Triton used a two-piece spark plug whose lower porcelain/shell section seizes in the head and breaks off during removal, turning a routine plug change into head-removal-level work.
- Check variable cam timing / timing chain (5.4l 3-valve) on 2005–2006 cars. Cam phaser rattle at cold start and under light load, and timing chain tensioner/guide wear, on the 3-valve 5.4L; aggravated by low or degraded oil.
- End with a pre-purchase inspection of this car. Aggregate data describes the population; the example in front of you has its own history.
For a buyer, an early-failure pattern is comparatively good news on a used example: 24% of the reported failures occur in the first 12,000 miles, which on a car of this age means they have already happened or they were never going to. Service history matters more than mileage here.
On inspection, the suspension and the electrical system are where this generation's reports concentrate, so those are the areas worth a specific look. The electrical system in particular shows a median failure mileage of 56,000, which gives a concrete number to compare against the odometer of any car you are considering.
None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.
What fails, and when
Figure 2 · Lincoln Navigator 2003–2006
When each system fails
Bar spans the middle half of reports; the notch inside each bar is the median. Miles at failure on a proportional scale — equal distances are equal ratios, not equal miles.
- Visibility equipment21 reports2,000350–30,000Visibility equipment: 21 reports, median 2,000 miles, middle half 350 to 30,000 miles.
- Transmission and driveline29 reports30,0003,000–74,000Transmission and driveline: 29 reports, median 30,000 miles, middle half 3,000 to 74,000 miles.
- Body structure38 reports55,0003,000–95,000Body structure: 38 reports, median 55,000 miles, middle half 3,000 to 95,000 miles.
- Electrical system46 reports56,0009,000–100,000Electrical system: 46 reports, median 56,000 miles, middle half 9,000 to 100,000 miles.
- Engine and its cooling system38 reports60,00032,000–99,000Engine and its cooling system: 38 reports, median 60,000 miles, middle half 32,000 to 99,000 miles.
- Suspension92 reports75,00040,000–103,000Suspension: 92 reports, median 75,000 miles, middle half 40,000 to 103,000 miles.
- Airbag system39 reports95,00056,000–125,000Airbag system: 39 reports, median 95,000 miles, middle half 56,000 to 125,000 miles.
- Your odometer — appears after you enter it in “Where your car sits”
Ordered by median mileage, earliest first. The first 12,000 miles are shaded: that is the boundary this site uses between a manufacturing defect and ordinary wear, not a property of the world.
Source: NHTSA Office of Defects Investigation, public domain.
| System | Complaints | Share | Median | 25–75% |
|---|---|---|---|---|
| Suspension | 92 | 20.0% | 75,000 | 40,000–103,000 |
| Electrical system | 46 | 10.0% | 56,000 | 9,000–100,000 |
| Airbag system | 39 | 8.5% | 95,000 | 56,000–125,000 |
| Body structure | 38 | 8.3% | 55,000 | 3,000–95,000 |
| Engine and its cooling system | 38 | 8.3% | 60,000 | 32,000–99,000 |
| Transmission and driveline | 29 | 6.3% | 30,000 | 3,000–74,000 |
| Visibility equipment | 21 | 4.6% | 2,000 | 350–30,000 |
| Engine | 20 | 4.4% | 77,000 | 60,000–120,000 |
| Throttle and speed control | 19 | 4.1% | 57,000 | 33,000–80,000 |
| Hydraulic brake circuit | 16 | 3.5% | 15,000 | 7,500–72,000 |
Where your car sits
Failure reports by the odometer reading they were filed at. Pick the anchor nearest your car — or type the exact mileage: your marker lands on this curve and on the timing chart above.
Figure 3 · Lincoln Navigator 2003–2006 · 361 reports with mileage
Share of reports below each mileage
Share of mileage-tagged reports filed at or below each odometer reading. Steps rise only at bin edges, by exact counted shares.
- 60,000 mi — 50% of reports below
- 90,000 mi — 69% of reports below
- 120,000 mi — 83% of reports below
- Median — the staircase crosses the 50% line here
- Your odometer — appears after you enter it below
The staircase tops out at 99%: the remaining 0.8% of reports (3) came above 200,000 miles.
Nothing is smoothed or interpolated. Linear axis, same as Figure 1.
Source: NHTSA Office of Defects Investigation, public domain.
At 60,000 miles
50% of the failure reports on this generation came below this mileage. That describes reports, not your odds.
Reported earlier than this mileage — ask for repair records
- Visibility equipment — median 2,000 mi
In the reporting window
- Suspension — middle half 40,000–103,000 mi
- Electrical system — middle half 9,000–100,000 mi
- Airbag system — middle half 56,000–125,000 mi
- Body structure — middle half 3,000–95,000 mi
- Engine and its cooling system — middle half 32,000–99,000 mi
- Transmission and driveline — middle half 3,000–74,000 mi
At 90,000 miles
69% of the failure reports on this generation came below this mileage. That describes reports, not your odds.
Reported earlier than this mileage — ask for repair records
- Transmission and driveline — median 30,000 mi
- Visibility equipment — median 2,000 mi
In the reporting window
- Suspension — middle half 40,000–103,000 mi
- Electrical system — middle half 9,000–100,000 mi
- Airbag system — middle half 56,000–125,000 mi
- Body structure — middle half 3,000–95,000 mi
- Engine and its cooling system — middle half 32,000–99,000 mi
At 120,000 miles
83% of the failure reports on this generation came below this mileage. That describes reports, not your odds.
Reported earlier than this mileage — ask for repair records
- Suspension — median 75,000 mi
- Electrical system — median 56,000 mi
- Body structure — median 55,000 mi
- Engine and its cooling system — median 60,000 mi
- Transmission and driveline — median 30,000 mi
- Visibility equipment — median 2,000 mi
In the reporting window
- Airbag system — middle half 56,000–125,000 mi
Which systems, and when
Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 58,567 miles; the figures below show which parts of the car run ahead of that and which run behind.
The suspension accounts for 20.0% of complaints (92 reports, 75 of them with a mileage figure), with a median of 75,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 40,000 and 103,000 miles.
The electrical system accounts for 10.0% of complaints (46 reports, 30 of them with a mileage figure), with a median of 56,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 9,000 and 100,000 miles.
The airbag system accounts for 8.5% of complaints (39 reports, 32 of them with a mileage figure), and it fails late — a median of 95,000 miles, considerably beyond the vehicle's overall median. That pattern is consistent with normal service life rather than a defect, though it matters for anyone buying an example already near that mileage. The middle half of these reports falls between 56,000 and 125,000 miles.
Body structure accounts for 8.3% of complaints (38 reports, 27 of them with a mileage figure), with a median of 55,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 3,000 and 95,000 miles.
The engine and its cooling system accounts for 8.3% of complaints (38 reports, 33 of them with a mileage figure), with a median of 60,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 32,000 and 99,000 miles.
The transmission and driveline accounts for 6.3% of complaints (29 reports, 24 of them with a mileage figure), and it fails early — a median of 30,000 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 3,000 and 74,000 miles.
Differences between model years
Within this generation, complaint volume is not constant across model years. The 2003 model year drew the most — 179 complaints — while 2005 drew the fewest at 71. The median year sits at 104.
The first year of the generation, 2003, sits above the median. That is a common pattern — early production of a redesigned vehicle tends to surface problems that later years do not repeat — and it is worth weighing when choosing between years.
Recalls and what they cover
No recall campaigns covering this generation appear in NHTSA's post-2010 recall file. That is not the same as an absence of problems — recalls address safety defects specifically, and many of the complaints above concern faults that are expensive or annoying without meeting that threshold.
Reported severity
What owners reported alongside the failure itself, out of 459 complaints against this generation:
- Crashes
- 28 (6.1%)
- Fires
- 17
- Injury reports
- 30
- Fatality reports
- 1
These flags are self-reported by complainants and unverified by NHTSA; one report can carry several flags, so the counts overlap and do not sum to a total. They are not adjusted for how many of these vehicles are on the road. No chart is drawn here on purpose: overlapping counts spanning very different magnitudes cannot be honestly encoded as lengths.
Documented problems
Air Suspension 2003–2006
Air spring leaks, compressor failure and height-sensor faults continue; complaint volume is highest around MY2004.
Spark Plugs (5.4l 3-Valve) 2005–2006
The 3-valve Triton used a two-piece spark plug whose lower porcelain/shell section seizes in the head and breaks off during removal, turning a routine plug change into head-removal-level work.
Variable Cam Timing / Timing Chain (5.4l 3-Valve) 2005–2006
Cam phaser rattle at cold start and under light load, and timing chain tensioner/guide wear, on the 3-valve 5.4L; aggravated by low or degraded oil.
By model year
| Year | Complaints | With mileage |
|---|---|---|
| 2003 | 179 | 136 |
| 2004 | 119 | 87 |
| 2005 | 71 | 56 |
| 2006 | 90 | 82 |
What owners reported
I purchased my vehicle brand new in january of 2003. I have had numerous problems with the vehicle since day 1.The entire computer had to be changed. The truck stalled on me at highway speed. It took over 2 1/2 weeks to get my vehicle back.Here is a list of the other problems i have had. The rear vent motors have been…
2003 · Visibility equipment
Built from 361 NHTSA complaints with mileage · snapshot 2026-08-18 · open data · reproduce this page