Reliability Guides
Audi 2.9T (EA839) Engine Reliability: Pre-2019 Valvetrain Flaw & Plastic Cooler Reality
Audi 2.9T engine reliability: Pre-2019 valvetrain flaw, charge-air cooler failures, and transmission issues across RS5 B9, RS4 B9, SQ8.
Audi RS5 B9 Charge-Air Cooler Failure: The Hydrolock Risk
Audi RS5 B9 EA839 charge-air cooler failure guide: plastic end tank cracks, stone damage, hydrolock risk, symptoms, and preventive aluminum upgrade costs.
Audi RS5 B9 Common Problems: The 5 EA839 Failures You Must Know
Audi RS5 B9 2.9T EA839 common problems: pre-2019 rocker arm failure, charge-air cooler cracks, cooling system plastic failures, and mileage-based patterns.
Audi RS5 B9 Reliability (2018–2023): The Silent Valvetrain Threat
Why the PRE-2019 RS5 is a 'time bomb' (Rocker Arms) and why POST-2019 owners must fear plastic coolant pipes.
Audi RS5 B9 Rocker Arm Failure: The Pre-2019 $15,000 Design Flaw
Audi RS5 B9 EA839 rocker arm failure guide: pre-July 2019 needle bearing design flaw, failure mileage, symptoms, July 2019 revision, and repair costs.
BMW M3 F80 Common Problems: The 6 Failures That Define S55 Ownership
BMW M3 F80 S55 common problems: crank hub failure, charge-air cooler cracks, leaks, and repair costs. Real owner failure data & mileage timelines.
BMW M3 F80 Crank Hub Failure: The $2,000 Upgrade vs $20,000 Catastrophe
BMW M3 F80 S55 crank hub failure guide: 3-piece design flaw, unpredictable failure mileage, symptoms, preventive upgrade costs vs catastrophic engine rebuild.
BMW M3 F80 S55 Reliability After 100,000 Miles: Owner Data Analysis
Reliability analysis of BMW M3 F80 S55: failure patterns, mileage milestones, and real-world owner complaints from forum data.
BMW M4 F82 Common Problems: S55 Reliability Issues You Must Know
BMW M4 F82 S55 common problems: crank hub failure, charge-air cooler cracks, oil leaks, turbo wear, and mileage-based failure patterns with repair costs.
BMW M4 F82 S55 Reliability After 100,000 Miles: Owner Data Analysis
Reliability analysis of BMW M4 F82 S55: failure patterns, mileage milestones, and real-world owner complaints from forum data.
BMW M5 F10 Common Problems: The 5 S63 Failures That Bankrupt Owners
BMW M5 F10 S63 common problems: rod bearing failure, turbo oil leaks, fuel injector failures, DCT overheating, and mileage-based costs.
BMW M5 F10 Reliability: Rod Bearings & The Hot-V Gamble
How reliable is the BMW M5 F10? A brutal analysis of S63 rod bearing failure, turbo oil leaks, and DCT issues from owner data.
BMW M5 F10 Rod Bearing Failure: The $2,500 Preventive vs $20,000 Catastrophe
BMW M5 F10 S63 rod bearing failure guide: undersized bearing design, failure mileage patterns, symptoms, preventive replacement costs vs engine rebuild.
BMW M5 F10 Turbo Problems: Hot-V Oil Leaks and Turbocharger Failures
BMW M5 F10 S63 turbo problems: hot-V oil line leaks, turbocharger bearing failures, symptoms, mileage patterns, and repair costs for independent vs dealer.
BMW S55 Engine Reliability: Complete Failure Analysis & Ownership Reality
BMW S55 engine reliability: Crank hub failure risk, charge-air cooler issues, and oil consumption across M3 F80, M4 F82, M2 Competition.
BMW S63 Engine Reliability: Rod Bearing Failure & Hot-V Turbo Reality
BMW S63 engine reliability: Rod bearing failure, hot-V turbo oil leaks, and catastrophic failure patterns across F10 M5, F12 M6, X5 M.
Mercedes C63 W205 60,000 Mile Problems: The $10,000 Repair Window
What fails on the Mercedes C63 W205 between 50,000-70,000 miles: oil separator engine-out repairs, oil leaks, and water pump failures with real owner costs.
Mercedes-AMG C63 W205 Common Problems: The 5 Failures Every Owner Faces
Mercedes C63 W205 M177 common problems: oil separator engine-out failures, chronic oil leaks, MCT transmission overheating, and mileage failure timelines.
Mercedes C63 W205 Oil Leak Problems: Engine-Out vs Progressive Leaks
Mercedes C63 W205 M177 oil leak guide: oil separator catastrophic failure, valve cover leaks, oil pan gaskets, and oil cooler seal problems with repair costs.
Mercedes-AMG C63 W205 Reliability: The Wet Engine Reality
Why the W205 C63 is defined by oil leaks, radiator vulnerability, and interior rattles. A brutal look at M177 ownership.
Mercedes C-Class Reliability: What Owners Report
Common issues, service bullets, and which engines to prefer.
Mercedes-AMG M177 Engine Reliability: Oil Leak Epidemic & Stone Damage Reality
Mercedes-AMG M177 engine reliability: Valve cover oil leaks, thermostat failures, and stone damage across C63 W205, E63 W213, AMG GT.
Porsche 911 Reliability Guide: Complete Analysis (997–992 Generations)
Comprehensive reliability analysis covering known issues, maintenance costs, and ownership insights for Porsche 911 generations from 997 to 992.