Ford Explorer Problems by Year 2011–2026: Transmission, Exhaust & Repair Costs

The Ford Explorer has been one of America's best-selling SUVs for decades, and honestly, there's a reason people keep buying them. They're comfortable, spacious, and generally reliable—but like any vehicle that's been around the block a few times, they've got their quirks. If you own one or you're thinking about buying one, you're going to want to know what problems might pop up and drain your wallet.

I've spent years talking to Explorer owners, mechanics, and Ford techs, and the story changes depending on which generation you're looking at. The fifth generation (2011-2019) had some pretty specific headaches that the sixth generation (2020-2026) has mostly fixed—but new models brought their own challenges. Let's break down what goes wrong with these SUVs year by year.

For more, see our guide on most reliable SUVs.

The Big Picture: 5th Gen vs. 6th Gen Explorers

Here's the quick version: if you own a 2011-2019 Explorer, you're more likely to deal with transmission shuddering, exhaust system failures, and cooling system leaks. If you've got a 2020 or newer, you've dodged most of those bullets, but you might face some different issues related to software and electrical components.

The fifth-generation Explorer was a solid redesign in 2011, but Ford clearly didn't catch everything. The sixth generation, which rolled out in 2020, is a significant improvement, but no vehicle is perfect.

2011-2015 Explorers: The Exhaust Problem Years

Let me start with the elephant in the room: the exhaust intrusion issue. This is one of the most serious problems we've seen, and it affected a massive number of Explorers from 2011 through 2019.

What happened was carbon monoxide (CO) was leaking into the cabin through faulty welds in the exhaust system. We're talking about toxic gas seeping into the air you and your family are breathing. This wasn't just an inconvenience—it was a safety hazard. The National Highway Traffic Safety Administration (NHTSA) launched formal investigations into these vehicles, and Ford issued multiple recalls.

The root cause came down to manufacturing defects in the welds connecting the exhaust manifold and intermediate pipes. The 2011-2013 model years were particularly susceptible, with the problem stemming from inadequate welding in the production process. Under certain conditions—particularly when the vehicle was operating at low speeds or idling, which is when exhaust backs up more easily—these weak welds would fail and allow CO to seep into the cabin instead of being properly expelled outside.

The symptoms? Drivers reported unusual exhaust smells inside the cabin, especially when the vehicle was idling or sitting in traffic. Some people complained of headaches and nausea, which are classic signs of CO exposure. In severe cases, owners described experiencing dizziness and fatigue during short drives, all caused by inhaling small amounts of this colorless, odorless poison.

What made this issue so insidious was that many owners didn't immediately recognize the danger. They thought the smell was just part of owning an SUV or attributed their headaches to other causes. It wasn't until NHTSA investigations and media reports raised awareness that the true scope of the problem became clear.

Ford issued recalls starting in 2014 and continuing through 2019, covering hundreds of thousands of vehicles across multiple model years. The fix involved repairing or replacing the exhaust manifold and associated components. In many cases, Ford dealers completely replaced the manifold and welded connections to ensure they met quality standards. Some vehicles required additional repairs to the intermediate exhaust pipes as well.

If you own a 2011-2015 Explorer, check your vehicle's recall history immediately on Ford's website or NHTSA's recall database. This is not something to ignore. Even if your vehicle was already recalled and repaired, it's worth documenting that work as part of your ownership records. If you're shopping for a used Explorer from these years, always ask for proof that the exhaust recall was completed.

2011-2019: The Transmission Shudder

The six-speed automatic transmission in these vehicles became notorious for shuddering and hesitation, especially during acceleration. Owners described it as a rough, jerky feeling that felt like the transmission couldn't decide what gear to be in.

The issue typically showed up around 40,000-80,000 miles, right when you were getting comfortable with the vehicle. Some mechanics traced it to a problem with the torque converter or internal transmission wear, while others blamed faulty solenoids. The real frustration for owners was that the problem was inconsistent—sometimes it would be really bad, and other times the transmission would shift smoothly for a while, making it hard for mechanics to diagnose on the first visit.

What's happening inside is usually a combination of factors. The torque converter can develop internal wear where the fluid isn't circulating properly, causing a loss of hydraulic pressure and those jarring shifts. Meanwhile, the transmission control solenoids—which manage fluid flow and gear selection—can fail or become sluggish, sending incorrect signals to the transmission computer about which gear to engage.

Ford released several transmission software updates that were supposed to address this. Many owners got temporary relief from a reprogramming session at the dealership, which costs around $150-$300 and just recalibrates how the transmission responds to throttle input. For a while, that would smooth things out. But for a lot of folks, the shudder eventually came back.

The real kicker? A transmission replacement can run you $3,000-$5,500 depending on whether it's remanufactured or new, plus labor. A reprogramming or solenoid replacement is cheaper at $800-$1,500, but it doesn't always solve the problem permanently. Some owners have reported needing multiple visits to the dealership and multiple attempts at fixes before finally biting the bullet and getting a full transmission replacement. That's not just expensive—it's annoying and time-consuming.

Timing Chain Issues Across the Decade

This one spans multiple years and generations. The timing chain in certain Explorer engines—particularly the 3.5L EcoBoost in some 2013-2018 models—has shown premature stretching and wear. Ford's EcoBoost engines were designed to be efficient and powerful, but the timing chain in some units was apparently undersized for the stress they endure.

Your timing chain is basically the heartbeat of your engine. It synchronizes the crankshaft and camshaft so that the valves open and close at precisely the right moment. If it fails, you're looking at catastrophic engine damage—we're talking bent valves, damaged pistons, and a complete engine rebuild or replacement. The warning signs include a rattling noise from the front of the engine, especially on cold starts when oil pressure is low and lubrication isn't optimal yet. Some owners reported this noise at 60,000-100,000 miles, which is alarmingly early for a timing chain failure.

What happens is the chain stretches over time due to normal wear, but in these Explorers, it stretches too fast. As the chain gets longer and looser, it can slip on the gears that drive it, which throws off the engine's timing and causes that distinctive rattle. Ignore it, and the chain can break entirely, leading to catastrophic failure.

The tricky part is that a timing chain rattle might not show up on every cold start, so owners sometimes convince themselves it's not a big deal. But once you hear it consistently, it's a warning sign that your chain is in trouble and needs to be replaced before it breaks.

For comparison, other midsize SUVs like those detailed in our Chevy Equinox problems analysis show different reliability patterns.

Ford has faced similar challenges across their lineup, as detailed in our Ford F-150 problems by year analysis.

A timing chain replacement isn't cheap. You're looking at $1,200-$2,500 in parts and labor, depending on whether your engine needs additional repairs. At a dealership, expect to pay closer to $2,000-$3,000. It's a significant job that requires partially disassembling the front of the engine, and it's not something a backyard mechanic should attempt unless they're very experienced.

Coolant Leaks: A Persistent Annoyance

Multiple generation Explorers have developed coolant leaks from the thermostat housing and water pump areas. The plastic components degrade over time, especially in hotter climates, and start weeping coolant.

You'll notice this as a sweet-smelling puddle under your vehicle or a gradually dropping coolant level. Ignore it, and you'll overheat your engine.

Thermostat housing replacement runs $400-$700. A water pump job is typically $600-$1,000. Not catastrophic, but annoying maintenance.

Rear Axle Problems

Some 2011-2015 Explorers developed issues with the rear differential and axle bearings. Owners reported whining sounds from the rear, especially during acceleration, along with some vibration.

This is often a sign of worn bearings or low/contaminated fluid. A fluid change and seal replacement might run $300-$500 early on. If you let it go, an axle replacement could be $1,500-$2,500.

2020-2026 Models: A Fresh Start (With New Issues)

The sixth-generation Explorer is substantially better built, but it's not immune to problems. The good news is the exhaust intrusion issue is gone, and the transmission is more refined.

However, newer Explorers have shown some electrical and software-related issues. Some owners reported SYNC infotainment system glitches, door lock failures, and occasional warning lights that don't correspond to actual problems. These are usually warranty-covered, but they're annoying.

The good news? This generation is too new for major mechanical failures to have shown up in large numbers yet. Check back in a few years.

Police Interceptor Problems

Ford made a special Police Interceptor Utility version of the Explorer for law enforcement, specifically engineered to handle the rigorous demands of patrol work. These high-duty vehicles are built tougher than civilian models with upgraded cooling, electrical systems, and engine management, but they still face additional strain from the way they're operated.

Think about what a police vehicle goes through: hours of idling while the officer is handling calls, frequent hard acceleration for pursuits, constant use of the electrical system (lights, radios, computer equipment), and driving in all weather conditions. That's a brutally harsh duty cycle compared to what the average family does in their Explorer.

Cops reported more frequent transmission issues, battery drain problems, and accelerated wear on cooling systems compared to civilian models. The transmission shudder problem we discussed earlier hit police units particularly hard because of all that idling and stop-and-go driving. The cooling system gets worked harder too, and some departments reported overheating issues in traffic-heavy patrol scenarios where the vehicle is constantly stopping and starting.

Battery drain was also a significant issue with some police models, particularly when the vehicle was parked for long periods with the electrical accessories running. The upgraded electrical system in police models is designed to handle more load, but some units apparently had issues with parasitic drain that could kill the battery.

If you're buying a used police Explorer, it's important to get a thorough pre-purchase inspection and expect a potentially higher maintenance history than a civilian model of the same year. Ask about transmission service records, cooling system repairs, and electrical work. The upside is that police vehicles are usually very well-maintained by their agencies—they tend to get regular service and are less likely to have been abused through neglect, even if they've been driven hard. The downside is that harsh duty means more mileage and more wear on critical components.

Best and Worst Years to Buy

Worst Years:

• 2011-2013: Absolute worst for exhaust intrusion issues—these years had the highest failure rates. Also dealing with early transmission problems and solenoid failures in the first 40,000 miles. If you're looking at this range, the vehicle should have been recalled and the exhaust system repaired, but verify this before buying.
• 2013-2015: Timing chain problems start appearing in this range, particularly in the 3.5L EcoBoost models. Transmission shudder is also still very common. The good news is that some of the earlier exhaust issues had been addressed, but you're still taking on risk.
• 2016-2017: Still dealing with transmission shudder in some units, though Ford's software updates had begun helping. These years are in that awkward middle ground where they're not new enough to have sixth-gen reliability, but not old enough that all the kinks have been worked out of the previous generation.

Best Years:

• 2019: The last year of the fifth-gen, and honestly, this is a sweet spot. By 2019, Ford had released numerous software and recall fixes. Many of the major problems had been identified and addressed. If you can find a 2019 with good maintenance records and documented recall work, you're getting a fifth-gen Explorer that's had most of its problems worked out.
• 2020-2023: Most reliable period so far—sixth-generation improvements have genuinely paid off. The new platform addressed the exhaust intrusion issue entirely, the transmission is better refined, and there haven't been the widespread mechanical failures like in the fifth gen. You're paying more for these, but you're buying peace of mind.
• 2024-2026: Latest models with the most advanced safety and reliability features. These are essentially problem-free from a mechanical standpoint so far, though they're also so new that truly widespread issues haven't had time to develop yet. The newer tech and software updates make these very solid bets for long-term ownership.

What Will It Cost You? A Repair Cost Breakdown

Here's a real-talk table of what you might spend:

These numbers assume average labor rates across the US. Dealership repairs tend to be 20-30% higher.

The Real Takeaway

Before buying a used Explorer with high mileage, review our comprehensive guide on what to expect.

The Ford Explorer is still a solid SUV choice, especially if you pick the right year. The fifth generation had some frustrating issues that'll cost you money, but they're well-documented and many have been addressed through recalls. The sixth generation is a significant step forward.

If you're shopping used, aim for 2019 or 2020-plus models. If you're stuck with an older Explorer, stay on top of recalls and preventative maintenance. Get the transmission fluid serviced regularly, watch for exhaust smells, and don't ignore that engine rattle.

The good news? These issues aren't uncommon enough to make the Explorer unreliable compared to competitors. With proper care and maybe a little protection from extended coverage plans like those through CoverageX, you can keep your Explorer running strong for 150,000 miles or more. A lot of Explorer owners do exactly that.

The key is knowing what to look for and being proactive rather than reactive. Keep an eye on your vehicle's symptoms, stay current with recalls, and you'll avoid the worst headaches. Your wallet—and your peace of mind—will thank you.