A simple, cheap-to-run classic pony car with body-on-unibody construction and huge parts availability. The money goes into fixing rust, tired suspension and brakes, and undoing decades of amateur restoration and rewiring.
AI-drafted profile
This failure-mode list was drafted by AI and cross-checked against this car’s real NHTSA complaint data. It has not yet been verified by our mechanics or owners, and it deliberately shows no cost figures: we never publish a dollar amount we can’t source. Own one? Your cost submissions below are what turn this into a verified teardown.
What this car is known for
tap a row for the detail
Fuel system leaks and old tank/linesdeal-shaperLikely due nowcost pending›
What you’ll notice: Gas smell, weeping fuel lines, or a rusty tank staining the trunk floor.
Original steel lines, cork gaskets, and the in-trunk tank degrade with age, and modern ethanol fuel attacks old rubber. A known fire risk on neglected cars.
Condition-driven: inspect, don't assume
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Four-wheel drum brakes (or tired front discs)Likely due nowcost pending›
What you’ll notice: Long pedal, pulling under braking, poor stopping in traffic.
Standard cars came with four-wheel manual drums that are marginal by modern standards and often neglected. Many have disc conversions of varying quality.
Condition-driven: inspect, don't assume
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Worn front suspension and steeringLikely due nowcost pending›
What you’ll notice: Wandering, clunks over bumps, vague steering, uneven tire wear.
Upper/lower ball joints, idler arm, and bushings wear out and are often decades old. The manual box gets sloppy.
Condition-driven: inspect, don't assume
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Aging generator/electrical and hacked wiringLikely due nowcost pending›
What you’ll notice: Dim lights, dead accessories, melted connectors, added inline fuses everywhere.
Early cars used a generator (not alternator), and 50-plus years of amateur repairs leave brittle, spliced harnesses. Fire risk if bodged.
Condition-driven: inspect, don't assume
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
289/200 oil leaks and worn valvetrainLikely due nowcost pending›
What you’ll notice: Oil spots, valvetrain tick, blue smoke on startup.
Rear main seals, valve cover and timing cover gaskets seep with age, and worn valve guides are common on high-mile originals.
Condition-driven: inspect, don't assume
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Structural rust in torque boxes, floors, and frame railsdeal-shaperInspect for itcost pending›
What you’ll notice: Flaking metal or filler in footwells, sagging doors, crunchy floors under carpet.
These are unibody cars with no separate frame, so rust in the torque boxes and rails compromises structural integrity. Almost every unrestored car has it somewhere.
Condition-driven: inspect, don't assume · applies only if found
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Old, date-expired tiresInspect for itcost pending›
What you’ll notice: Cracked sidewalls, hard rubber, vibration, blowout risk.
Classics sit and accumulate few miles, so tires age out long before the tread wears. Reflected in the NHTSA tire complaints.
Condition-driven: inspect, don't assume · applies only if found
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
PPI checklist
AI-drafted for this chassis. Hand it to your inspector.
- 01Pull carpet and check floor pans, and probe the torque boxes ahead of the rear leaf spring mounts for rust or repair.
- 02Inspect the front frame rails and shock towers (Shelby-style export braces or reinforcement plates hint at prior stress).
- 03Open the trunk and lift the mat to check the tank top, drop-offs, and rear window channel for rust.
- 04Verify the VIN on the door tag and fender apron, and check the engine code letter to confirm 289 vs 6-cylinder authenticity.
- 05Check for fuel smell and inspect rubber fuel lines and the tank sending unit gasket.
- 06Feel steering play at the wheel and check front ball joints and idler arm for slop with the wheels off the ground.
- 07Read the DOT date codes on the tires and look for sidewall cracking.
- 08Trace the wiring harness for splices, added fuses, and non-original alternator swaps.
Ask the seller
- ·Is this a numbers-matching 289 car or has the drivetrain been swapped?
- ·When were the floors, torque boxes, and frame rails last inspected or repaired, and do you have photos?
- ·Has the fuel tank, lines, and brake system been gone through recently?
- ·Has it been converted to front disc brakes or an alternator, and by whom?
What owners reported to NHTSA
5 owner complaints and 1 recalls on file for the 1966 FORD MUSTANG (public federal data).
1 recall. Verify completion with a VIN check
- 19E011000 · STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
Drake Automotive Group, LLC (Drake) is recalling certain Scott Drake left and right wheel spindles, part numbers C5ZZ-3106-L, C5ZZ-3105-R, C70Z-3106-L, C70Z-3105-R sold for use on 1965-1966 Ford Mustang V8s and 1967-1969 Ford Mustangs (all vehicles with drums). The spindle may fail resulting in the
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