Rust & corrosion
Rust and corrosion on a used car · where to look
Rust is the one fault that gets worse while the car sits still. Cosmetic bubbling is a haggling point; structural corrosion is a walk-away.
Quick answer
Rust & corrosion appears as a documented fault on 96 models in our library, across 102 separate faults. The most common areas involved are Brakes, Body, Bodywork, Chassis, Electrical, Suspension.
What it usually means
- Bubbling along arch lips and door bottoms · cosmetic now, structural later.
- Flaking on sills, jacking points or the boot floor · likely a test advisory or failure.
- Corroded brake lines and subframes · safety-critical and expensive to do properly.
- Fresh underseal on an older car can be maintenance or a cover-up.
How to check it on the forecourt
- 01Run a hand along the inside of each arch and along both sills.
- 02Lift the boot carpet and the spare wheel well and look for damp and scale.
- 03Torch the subframe mounts, brake lines and fuel lines.
- 04Check the last few test histories for corrosion advisories.
Models where this is documented
Each entry links to that model's full fault page, with onset mileage, severity and what to inspect.
Alfa Romeo Giulietta2010–20202 matching faults
- Dashboard warning lights and instrument cluster faults from wiring corrosion· Age-related
- Paint bubbling around wheel arches and sills· Age-related
Hyundai i102013–20252 matching faults
- Rear beam and shock wear from potholes· 70,000+ miles
- Door edge and tailgate corrosion on older cars· 8+ years
Mazda Mazda22015–20252 matching faults
- Rear arch and sill corrosion on older cars· 7+ years
- Rear disc corrosion on low-mileage cars· Age-related
Mitsubishi L2002006–20232 matching faults
- Chassis and rear-body corrosion on older working trucks· Age-related
- Corroded rear light and trailer wiring connectors· Age-related
Nissan Ariya2022–20262 matching faults
- State of health lower than expected on early high-mileage cars· 40,000+ miles
- Rear disc corrosion from light friction-brake use· 30,000+ miles
Peugeot Boxer2014–20252 matching faults
- Corrosion on the chassis and rear crossmember· Age-related
- Sliding door and door bottom corrosion· Age-related
BMW i42021–20251 matching fault
- Corroded discs from regen braking use· 20,000+ miles
Chevrolet Bolt EV2017–20231 matching fault
- Disc corrosion from one pedal driving· 20,000+ miles
Citroen Berlingo2018–20251 matching fault
- Sliding door runner wear and corrosion· Age-related
Citroen Dispatch2016–20241 matching fault
- Rust around rear door hinges and load area floor· Age-related
Citroen Relay2006–20241 matching fault
- Rust on chassis rails and rear door bottoms· Age-related
Cupra Born2021–20261 matching fault
- Rear disc corrosion from light regen braking use· 30,000+ miles
Dacia Duster2013–20251 matching fault
- Corrosion on underbody components on older cars· Age-related
Dacia Logan MCV2013–20221 matching fault
- Paint quality issues and stone chip corrosion on lower panels· Age-related
Fiat 5002012–20241 matching fault
- Rear arch and sill corrosion on older cars· 8+ years
Fiat 500X2015–20241 matching fault
- Paint quality issues and stone chip corrosion on lower panels· Age-related
Fiat Doblo2010–20221 matching fault
- Rust around wheel arches and sliding door tracks· Age-related
Fiat Ducato2014–20251 matching fault
- Corrosion on the chassis and rear crossmember· Age-related
Fiat Panda2012–20251 matching fault
- Corrosion on the arches, sills and tailgate· Age-related
Fiat Punto2005–20181 matching fault
- Rust on sills, rear arches and around the tailgate· Age-related
Fiat Talento2016–20241 matching fault
- Rust around rear door hinges and load area floor· Age-related
Ford EcoSport2014–20221 matching fault
- Rear door-mounted spare wheel carrier wear and rust· 6+ years
Ford F-1502015–20201 matching fault
- Aluminum panel corrosion / dissimilar-metal reactions at fasteners.· Age-related
Ford Ka2016–20201 matching fault
- Rear arch and tailgate corrosion· Age-related
Ford Puma2019–20251 matching fault
- Rear brake corrosion from low usage on hybrid cars· Age-related
Ford Tourneo Custom2012–20231 matching fault
- Sliding door runner wear and sill corrosion· Age-related
Ford Transit2014–20241 matching fault
- Rear arch, sill and door bottom corrosion· Age-related
Ford Transit Custom2012–20241 matching fault
- Sliding door runner wear and rust on the sill and rear arches· Age-related
Honda Jazz2015–20251 matching fault
- Rear brake corrosion on low-mileage cars· Age-related
Hyundai Bayon2021–20251 matching fault
- Rear disc corrosion on low mileage cars· Age-related
Hyundai i202014–20251 matching fault
- Rear disc corrosion on low-mileage cars· Age-related
Hyundai Ioniq2016–20221 matching fault
- Rear disc corrosion from regenerative braking· Age-related
Kia Niro2016–20251 matching fault
- Rear disc corrosion from regenerative braking· Age-related
Kia Picanto2013–20251 matching fault
- Rear drum and disc corrosion on low-mileage cars· Age-related
Kia Stonic2017–20251 matching fault
- Stone chip corrosion on lower door edges and sills· Age-related
Kia Venga2010–20191 matching fault
- Corrosion on arches and tailgate· Age-related
Land Rover Discovery2017–20251 matching fault
- Coolant loss and thermostat housing leaks· 70,000+ miles
Lexus IS2013–20221 matching fault
- Rear disc corrosion from regen use· 30,000+ miles
Lexus NX2014–20211 matching fault
- Disc corrosion from regen braking· 30,000+ miles
Lexus UX2019–20261 matching fault
- Infotainment touchpad frustration and occasional freezes· Age-related
Showing the 40 models with the most documented matches · browse the full library.
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