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Symptom categories
Long-form hubs covering every symptom in that category.
Symptom guides
- Battery light on
- Black exhaust smoke
- Blue exhaust smoke
- Brake pedal soft or sinking
- Brakes squealing
- Burning smell
- Check engine light flashing
- Check engine light steady
- Clunk over bumps
- Engine knocking
- Engine overheating
- Fluid leak under car
- Grinding when braking
- Humming rises with speed
- Oil pressure light on
- Pulls to one side
- Rotten egg smell
- Rough idle or stalling
- Shakes when braking
- Shaking at highway speed
- Squeal on startup
- Sweet smell
- Transmission slipping
- White exhaust smoke
- Won't start — clicking
- Won't start — silence
Fault codes
- C0035
- C0040
- P0010
- P0011
- P0016
- P0101
- P0102
- P0113
- P0116
- P0128
- P0131
- P0133
- P0135
- P0141
- P0171
- P0172
- P0174
- P0300
- P0301–P0306
- P0335
- P0340
- P0401
- P0402
- P0420
- P0430
- P0440
- P0442
- P0446
- P0455
- P0456
- P0500
- P0505
- P0506
- P0507
- P0522
- P0562
- P0563
- P0700
- P0715
- P0730
- P0740
- P0741
- U0100
- U0121
Guides
- What Car Repairs Actually Cost: A Realistic 2026 Price Guide
- How to Not Get Ripped Off at the Mechanic: A Practical Defence
- The Check Engine Light: A Complete, Non-Panicking Guide
- Choosing an OBD2 Scanner: What Actually Matters (and What Doesn't)
- The Car Maintenance Schedule That Actually Prevents Failures
- Used Car Inspection: The Checks That Find the Expensive Problems
- Car Recalls: How to Check Yours and Why Most Go Unrepaired
- Winter Car Problems: Why Cold Weather Finds Every Weakness
- What Actually Belongs in a Car Emergency Kit
- Why Cars Fail: The Patterns Manufacturers Don't Advertise
Comparisons
- Bmw X3 vs Audi Q5
- Chevrolet Equinox vs Ford Escape
- Ford Explorer vs Chevrolet Traverse
- Honda Pilot vs Toyota Highlander
- Hyundai Tucson vs Kia Sportage
- Jeep Cherokee vs Jeep Compass
- Jeep Grand Cherokee vs Ford Explorer
- Nissan Rogue vs Toyota Rav4
- Porsche Macan vs Bmw X3
- Subaru Outback vs Subaru Forester
- Toyota Corolla vs Honda Civic
- Toyota Rav4 vs Honda Crv