The Ford Explorer is one of the best-selling SUVs in America, which means there are millions on the road and a huge spread in quality between model years. A clean 2009 or a sorted 2019 can run for years. A neglected 2003 or 2013 can drain your wallet faster than the payment ever did. This guide breaks down the problem years, the specific failures behind them, and what those repairs typically cost.
üìä The worst Explorer years at a glance
Here is how the trouble-prone years compare on their signature failures and the typical out-of-pocket cost when those parts let go.
| Year Range | Defining Failures | Typical Repair Cost | Risk |
|---|---|---|---|
| 2002-2005 | 5R55 transmission, rear differential/axle, electrical | $1,800-$3,500 (trans) | High |
| 2011-2014 | Internal water pump, PTU, power steering, MyFord Touch | $1,000-$2,000 | High |
| 2016-2017 | EcoBoost exhaust manifold, cabin exhaust odor, water pump | $600-$1,800 | Medium-High |
| 2006-2007 | Carryover transmission and rear-end wear (less severe) | $1,200-$2,500 | Medium |
Costs are ballpark national averages for independent shop work and vary by region, trim, and drivetrain. Dealer pricing typically runs 20 to 40 percent higher. Always price your specific repair before you authorize it.
üîß 2002-2005: transmissions and rear ends
This is the most complained-about era of the Explorer, and the 2002 model leads the pack. It was the first year of an all-new platform, and first-year redesigns are historically where the gremlins live. The headline issue is the 5R55 automatic transmission, which is prone to harsh shifts, slipping, and outright failure. A rebuild or replacement runs roughly 1,800 to 3,500 dollars.
The independent rear suspension on these trucks was also a weak point. Worn differentials, failing axle seals, and clunking from the rear end are common. Add aging wiring, intermittent electrical faults, and a fleet that is now well over 20 years old, and you have a recipe for nickel-and-dime repairs that add up fast. If a slipping transmission is your symptom, our guide on transmission slipping walks through what to check before you spend a dime.
⚙️ 2011-2014: the costly modern failures
When the Explorer went unibody for 2011, it traded truck-like durability for car-like ride and packaging, and it introduced a new set of expensive headaches. Three stand out.
Internal water pump
Many 3.5L V6 Explorers use a water pump driven by the timing chain and buried behind the timing cover. When it fails, coolant can leak internally into the engine oil. The repair is labor-heavy and commonly lands between 1,200 and 2,000 dollars. Watch for low coolant with no visible external leak, or a milky look to the oil. If your dash lights up, start with our P0217 engine overtemp breakdown.
Power transfer unit (PTU)
On all-wheel-drive models, the PTU sends power to the rear axle and runs hot with fluid that many owners never service. Neglect leads to whining, grinding, and failure, with replacement around 1,000 to 1,800 dollars. Ignored long enough, a failing PTU can take the transmission with it.
Power steering and electronics
Electric power steering assist faults and the much-maligned MyFord Touch infotainment system round out the complaints. Loss of steering assist is a safety concern worth addressing immediately rather than living with.
üí® 2016-2017: EcoBoost manifolds and cabin odor
The 2016 and 2017 trucks carry over the water pump risk and add their own issues. The 2.3L and 3.5L EcoBoost engines are prone to exhaust manifold leaks, which show up as a ticking noise on cold start and can let exhaust into places it does not belong. Manifold repairs typically run 600 to 1,500 dollars depending on engine.
This era also drew the most attention for reports of exhaust odor entering the cabin, concentrated heavily on Police Interceptor Utility units used by departments. Ford issued service work to seal the rear body. On a civilian Explorer the risk is lower, but it is worth a careful test drive with the climate system on recirculate off. If you smell exhaust inside, read up on exhaust smell in the car before you commit.
‚úÖ The Explorer years that hold up
It is not all bad news. A few model years earn a much cleaner reputation and make far better used buys.
- 2008-2010: The last of the body-on-frame Explorers. Simple 4.0L V6 and 4.6L V8 drivetrains, fewer electronics, and proven durability. Maintenance-friendly and cheap to fix.
- 2018-2019: By the end of the fifth generation, Ford had ironed out many of the early bugs. Better infotainment, refined drivetrains, and fewer chronic complaints.
- 2020+ (sixth gen): The rear-drive-based redesign is newer and improving, though early build quirks mean a thorough inspection still pays off.
No matter which year you target, a used Explorer deserves a pre-purchase inspection and a scan for stored codes. A clean carfax means nothing if the timing-chain water pump is about to go.
üß≠ How to shop around the bad years
If you have your heart set on an Explorer, you can still buy smart. Use this framework before you sign anything.
- Pull the codes. Bring a scanner or have a shop read both current and pending trouble codes. Cleared codes right before a sale are a red flag.
- Check the fluids. Milky oil points to the internal water pump. Burnt-smelling transmission fluid or low PTU fluid signals neglected driveline service.
- Test the steering and AWD. Listen for whine from the PTU and feel for loss of power steering assist at low speed.
- Smell the cabin. On 2011-2017 trucks, drive with windows up and heater on. Any exhaust odor is a reason to walk or negotiate hard.
- Price the repair before you buy. If something is off, run the likely fix through our quote checker so you know whether the asking price already bakes in a problem.
‚ùì Frequently asked questions
üìå TL;DR
Avoid the 2002-2005 Explorers for transmission and rear-end failures, treat the 2011-2014 trucks with caution for water pump and PTU costs, and inspect 2016-2017 EcoBoost models for manifold leaks and cabin odor. The 2008-2010 and 2018-2019 years are the safer plays. Whatever you find, pull the codes and price the repair before you buy.