LemonProof
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The smart-buying blog

Never buy a lemon.

Inspection and due diligence guides for anyone about to spend serious money on something used. What to look at, what to ask, and how to negotiate β€” no shop jargon.

Free tool: check open recalls & known issues by make, model and year β†’

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Cars

Ford Fusion Used: Common Problems & What to Check

Ford Fusion used common problems (EcoBoost coolant intrusion, transmission) by engine. What to verify. Free LemonProof report.

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Cars

Chevrolet Traverse Used: Problems & What to Check

Chevy Traverse used common problems (3.6 V6 timing chain, transmission) by year. Which to avoid. Free LemonProof report.

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Cars

Honda Odyssey Used: Common Problems & What to Check

Honda Odyssey used common problems (VCM oil/misfire, transmission, sliding doors) by year. What to verify. Free LemonProof report.

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Cars

Toyota Tundra Used: Common Problems & What to Check

Toyota Tundra used common problems: bulletproof 5.7 V8 vs the 2022+ twin-turbo V6 recall. What to verify by year. Free LemonProof report.

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Cars

Hyundai Sonata Used: Common Problems & What to Check

Hyundai Sonata used common problems (Theta II engine recall, oil consumption) by year and what to verify. Free LemonProof report.

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Cars

Jeep Cherokee Used: Common Problems & What to Check

Jeep Cherokee (KL) used common problems (2.4 Tigershark oil, 9-speed) by year and which to favor. Free LemonProof report.

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Cars

Dodge Charger Used: Common Problems & What to Check

Dodge Charger used common problems by engine (Pentastar V6, 5.7 Hemi tick) and which years to favor. Free LemonProof report.

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Cars

Subaru Crosstrek Used: Problems & What to Check

Subaru Crosstrek used common problems (oil consumption, CVT) by year and which to favor. Free LemonProof report.

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Cars

Kia Sportage Used: Common Problems & What to Check

Kia Sportage used common problems (Theta II engine recall, oil consumption) by year and what to verify. Free LemonProof report.

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Cars

Hyundai Elantra Used: Common Problems & What to Check

Hyundai Elantra used common problems (Nu engine oil consumption & recall) by year and which to verify. Free LemonProof report.

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Cars

Toyota Camry Used: Common Problems & What to Check

Toyota Camry used common problems by generation (oil consumption, dashboard, transmission) and what to check before buying. Free report.

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Cars

Subaru Outback Used: Common Problems & What to Check

Subaru Outback used common problems (head gasket, oil consumption, CVT) by year and what to check. Free LemonProof report.

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Cars

Ford Explorer Used: Common Problems & What to Check

Ford Explorer used common problems by generation (internal water pump, 2020 launch issues) and what to check. Free LemonProof report.

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Cars

GMC Sierra 1500 Used: Problems & What to Check

GMC Sierra 1500 used common problems (5.3 AFM lifters, oil use, 8-speed, 6.2 recall) and what to check. Free LemonProof report.

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Cars

Honda Accord Used: Common Problems & What to Check

Honda Accord used common problems by generation (1.5T oil dilution, 2.0T, CVT) and what to check before buying. Free LemonProof report.

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Cars

Subaru Forester Used: Common Problems & What to Check

Subaru Forester used common problems by year (FB25 oil consumption, CVT, head gasket) and which years to favor. Free LemonProof report.

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Cars

Toyota 4Runner Used: Common Problems & What to Check

Toyota 4Runner used common problems by generation (frame rust, brakes, aging V6) and which years to favor. Free LemonProof report.

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Cars

How to Tell If a Used Car Is a Lemon: 7 Warning Signs

The 7 warning signs of a problem used car, the paperwork to demand, and how to turn red flags into a lower price. Free LemonProof report.

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Cars

Ram 1500 Used: Common Problems & What to Check

Ram 1500 used common problems (Hemi tick, eTorque, air suspension, electronics) and what to check before buying. Free LemonProof report.

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Cars

Toyota Corolla Used: Common Problems & What to Check

Toyota Corolla used common problems by generation (CVT, older oil use) and what to check before buying. Free LemonProof report.

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Cars

Mazda CX-5 Used: Common Problems & What to Check

Mazda CX-5 used common problems (2018-2020 cylinder head, carbon buildup) and which years to favor. Free LemonProof report.

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Cars

BMW 3 Series Used: Common Problems & What to Check

BMW 3 Series used common problems by engine (N54 HPFP, N20 timing chain, cooling, oil leaks) and which to favor. Free LemonProof report.

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Cars

Honda CR-V Used: Common Problems & What to Check

Honda CR-V used common problems by generation (1.5T oil dilution, A/C) and what to check before buying. Free LemonProof report.

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Cars

Ford F-150 Used: Common Problems & What to Check

Ford F-150 used common problems by engine (EcoBoost cam phasers, 5.0 oil, 10-speed) and what to check before buying. Free LemonProof report.

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Cars

Carfax, AutoCheck & NMVTIS: What Each One Tells You

Carfax vs AutoCheck vs NMVTIS: what each vehicle history report covers, what records you can access, and how they complement LemonProof. Free report.

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Cars

Nissan Rogue Used: Common Problems & What to Check

Nissan Rogue used common problems (CVT, 1.5 turbo engine probe) by year and what to check before buying. Free LemonProof report.

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Cars

Ford Escape Used: Common Problems & What to Check

Ford Escape used common problems by engine (EcoBoost coolant intrusion) and which years to be careful with. Free LemonProof report.

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Cars

Chevy Bolt EV Used: Common Problems & What to Check

Chevy Bolt EV used: the battery fire recall explained, what to verify, range and what to check before buying. Free LemonProof report.

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Cars

Honda Civic Used: Common Problems & What to Check

Honda Civic used common problems by generation (1.5T oil dilution, A/C, CVT) and what to check before buying. Free LemonProof report.

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Cars

Toyota Tacoma Used: Common Problems & What to Check

Toyota Tacoma used common problems by generation (frame rust, transmission hunting, timing cover leak) and what to check. Free LemonProof report.

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Cars

Toyota RAV4 Used: Common Problems & What to Check

Toyota RAV4 used common problems by generation (transmission, fuel-fill, hybrid) and what to check before buying. Free LemonProof report.

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Cars

Toyota Highlander Used: Problems & What to Check

Toyota Highlander used common problems by generation (oil cooler hose, 8-speed, hybrid) and what to check. Free LemonProof report.

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Cars

Jeep Grand Cherokee Used: Problems & What to Check

Jeep Grand Cherokee used common problems (Pentastar tick, Hemi MDS, air suspension, electronics) and what to check. Free LemonProof report.

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Cars

Nissan Altima Used: Common Problems & What to Check

Nissan Altima used common problems (CVT failure, years to avoid) and what to check before buying. Free LemonProof report.

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Cars

Jeep Wrangler Used: Common Problems & What to Check

Jeep Wrangler used common problems (death wobble, Pentastar tick, soft-top leaks) and what to check before buying. Free LemonProof report.

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Cars

Ford Mustang Mach-E Used: Problems & What to Check

Ford Mustang Mach-E used common problems (HV contactor recall, 12V/door-latch, software) and what to verify. Free LemonProof report.

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Cars

Tesla Model 3 Used: Common Problems & What to Check

Tesla Model 3 used common problems (build quality, battery LFP vs NCA) and what to check before buying. Free LemonProof report.

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Cars

Honda Pilot Used: Common Problems & What to Check

Honda Pilot used common problems (VCM oil consumption/misfire, 9-speed) by generation and which years to favor. Free LemonProof report.

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Cars

Hyundai Tucson Used: Common Problems & What to Check

Hyundai Tucson used common problems (Theta II engine recall, oil consumption) and which years to verify. Free LemonProof report.

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Cars

Silverado 1500 Used: Common Problems & What to Check

Chevy Silverado 1500 used common problems (5.3 AFM lifters, oil use, 8-speed shudder, 6.2 recall) and what to check. Free LemonProof report.

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Cars

Chevy Equinox Used: Common Problems & What to Check

Chevrolet Equinox used common problems by year (2.4L oil consumption, timing chain) and which years to avoid. Free LemonProof report.

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Cars

Tesla Model Y Used: Common Problems & What to Check

Tesla Model Y used common problems (build quality, suspension, battery) and what to check before buying. Free LemonProof report.