Electrical gremlins, steering failures and brake trouble rarely announce themselves before the bill arrives. Owner complaint records show which models carry the costliest examples, along with the mileage at which each problem struck. Here are ten cars and SUVs where the repair tab and the odometer reading tell a useful story.
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1. Ford Ranger: Sensors That Keep Failing

Owners have filed 856 complaints on the Ford Ranger, and CarComplaints rates the 2019 model year as the worst, citing sensors that fail repeatedly. According to owner reports, the average repair came to $6,000, and it arrived at only 26,000 miles.
A bill that size at such low mileage is a reminder to treat dashboard warnings on a young truck seriously rather than waiting. Used-truck shoppers can check recall status by VIN at NHTSA and ask for service records showing any sensor work before agreeing to a price.
2. Mini Cooper: Water In The Wiring

Among 117 complaints on file for the Mini Cooper, one standout involves a 2002 car whose wiring harness shorted out after water collected on the floor. CarComplaints lists that repair at an average of $4,000, reached at 48,000 miles. The site names 2005 as the Cooper’s worst model year overall.
Damp carpet in a small car deserves attention before it becomes an electrical problem. Anyone shopping for an older Cooper can check the floor for moisture and musty smells, and ask whether any drain or seal repairs were documented.
3. Chrysler Town & Country: A Minivan That Will Not Start

The Chrysler Town & Country has 2,044 complaints, and its worst year, 2011, is led by a TIPM failure that kept the minivan from starting. Owner reports on CarComplaints put the average repair at $1,000, at 86,000 miles.
The TIPM is the module that distributes power to many of a vehicle’s electrical circuits, so a failure can show up as odd symptoms before a no-start. A buyer eyeing a 2011 example can ask for repair history, and test whether the van starts reliably after sitting.
4. Dodge Grand Caravan: A Hard-Starting Caravan

With 3,426 complaints on file, the Dodge Grand Caravan has plenty of owner feedback, and 2011 is rated its worst year. The top complaint that year is a faulty TIPM that leaves the van hard to start or unable to start at all, which CarComplaints tracks at $1,200 on average at 79,000 miles.
The same model year and the same module surface again on the Town & Country, so the pattern is worth knowing for anyone shopping among these minivans. Checking recall status by VIN at NHTSA and asking about past electrical repairs is a sensible first step.
5. Dodge Challenger: Alternator Out At Fifty Thousand

The Dodge Challenger has 315 complaints on file, and one entry covers a 2012 car whose alternator went out. The average repair cost was $700, and the failure came at 50,000 miles, according to owner complaints filed with CarComplaints.
An alternator that quits early can leave a driver stranded with a drained battery, so a weak charging system is worth ruling out before buying a used example. A mechanic can test charging output in minutes, and a dim-light or warning-light history is a useful thing to ask the seller about.
6. Ford Fusion: Power Steering Failure

The Ford Fusion has 2,347 complaints, and CarComplaints rates the 2011 model year as the worse of its years. Leading that year’s problems is power steering failure, with an average repair of $1,500 reported by owners.
Steering that suddenly turns heavy is a safety issue as well as a cost issue for any owner. A used 2011 Fusion deserves a test drive that includes slow parking-lot turns, and a check of service records for any steering rack or assist work already completed.
7. Volkswagen Routan: Shutting Off While Driving

The Volkswagen Routan has 184 complaints, and 2009 is its worst year. That model year’s top complaint describes a car that shuts off while driving, with the steering locking and the vehicle seizing, and CarComplaints reports an average of $1,000 to fix at 92,000 miles.
Few failures are more alarming than losing power on the road. Anyone considering a 2009 Routan can ask for proof of repairs related to shutoffs, check recall status by VIN at NHTSA, and take a long test drive that includes stop-and-go traffic.
8. Mercedes-Benz GLK350: Rotors Warped Early

The Mercedes-Benz GLK350 has only 29 complaints on file, but 2013 is rated its worst year, led by warped brake rotors. The average repair ran $700 at just 11,000 miles, according to owner complaints on CarComplaints.
Brake pulsation at such low mileage is the kind of symptom that shows up as a shaking pedal or steering wheel under braking. Test-driving a used GLK with a firm highway stop can reveal it, and service records will show whether the rotors were already replaced.
9. Ford Flex: A Light That Will Not Quit

The Ford Flex has 326 complaints on file, and CarComplaints names 2010 as its worst model year. One entry from the 2013 model concerns a door-ajar light that stays on, and the average fix was $300 at 71,000 miles.
A stuck warning light is a modest repair compared with others in this gallery, yet it can hint at a faulty door latch or switch. Checking that every door registers correctly when opened and closed is an easy part of any used-Flex inspection.
10. Porsche Cayenne: A Computer That Resets

The Porsche Cayenne has 74 complaints on file, with 2004 named as its worst model year. A 2016 entry stands out, though: a PCM that keeps resetting, which owners reported averaging $3,000 to fix at 46,000 miles.
The PCM, or powertrain control module, manages engine and transmission functions, so intermittent resets can cause erratic behavior. A late-model Cayenne buyer can ask for dealer records, check recall status by VIN at NHTSA, and note any warning lights during a test drive.
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