The 2016 S5 with the 3.0T supercharged V6 is generally reliable, but the dual-clutch transmission (S tronic) has known weak points, and high-mileage examples can suffer catastrophic engine bearing failures if oil maintenance was neglected.
Transmission Oil Cooler Failure
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Transmission fluid leaking near driver-side wheelwell, Burnt transmission fluid smell, Harsh shifting or limp mode, Check engine light with transmission temperature codes
Fix: Oil cooler seals fail and contaminate coolant or leak externally. Requires transmission fluid flush, cooler replacement, and sometimes mechatronic unit programming. 4-6 labor hours if no transmission damage; if coolant mixed into trans, add mechatronic replacement for another 8-10 hours.
Estimated cost: $1,200-3,500
Lower Transmission Mount Failure
Common · medium severity
Typical onset: 50,000-80,000 mi
Symptoms: Clunking when shifting from Park to Drive, Excessive vibration at idle in gear, Drivetrain slop on acceleration, Visible sagging or torn rubber on lower mount
Fix: Factory mount is hydraulic and tears easily, especially with spirited driving. Aftermarket solid mounts available but increase NVH. Replace mount and inspect adjacent bushings. 2-3 labor hours.
Estimated cost: $400-700
Connecting Rod Bearing Wear / Bearing Spin
Occasional · high severity
Typical onset: 80,000-140,000 mi
Symptoms: Metallic knocking at idle that increases with RPM, Low oil pressure warning, Metal shavings in oil or on magnetic drain plug, Sudden catastrophic failure with no prior warning
Fix: 3.0T supercharged engines can spin rod bearings if oil changes were extended or low-quality oil used. Requires complete engine teardown: crank polishing or replacement, new bearings, pistons inspected. If crank is damaged, short block replacement is cheaper. 20-30 labor hours for full rebuild; 15-20 for short block swap.
Estimated cost: $7,000-12,000
Fuel Filter Clogging (High-Pressure)
Occasional · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: Rough idle and misfires under load, Loss of power above 4,000 RPM, Fuel pressure fault codes (P0087, P0190), Hard starting after sitting overnight
Fix: High-pressure fuel filter inside the tank can clog from ethanol degradation or contaminated fuel. Requires fuel tank drop and sender unit removal. Often combined with fuel pump replacement as preventive measure. 3-5 labor hours.
Estimated cost: $800-1,400
Supercharger Clutch Wear
Rare · medium severity
Typical onset: 100,000+ mi
Symptoms: Whining noise from engine bay that comes and goes, Loss of boost under acceleration, Check engine light with boost pressure codes, Supercharger not engaging (no performance improvement)
Fix: Electromagnetic clutch on the supercharger can wear or fail. Requires supercharger removal and clutch replacement. Sometimes covered under extended warranty. 6-8 labor hours.
Estimated cost: $2,000-3,200
Carbon Buildup on Intake Valves
Common · low severity
Typical onset: 60,000-90,000 mi
Symptoms: Rough idle when cold, Hesitation or stumble on light throttle, Misfires at startup, Gradual loss of low-end power
Fix: Direct injection engines have no fuel wash over intake valves. Requires walnut blasting service every 60-80k miles. 3-4 labor hours for media blasting and manifold reinstall.
Estimated cost: $500-900
Owner tips
Use only VW 502.00 / 504.00 spec oil and change every 5,000 miles max—bearing longevity depends on it
Walnut blast intake valves every 60-80k to prevent rough running
Service transmission fluid every 40k miles despite 'lifetime fill' claim—extends mechatronic and clutch life
Check transmission oil cooler lines annually after 60k miles for seepage
Avoid tuning without upgrading the transmission; stock clutch packs are marginal even at factory power
Solid platform if maintained religiously, but transmission cooler failures and potential bearing issues make pre-purchase inspection and full service records non-negotiable—budget $2k/year for deferred maintenance on high-mileage examples.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: AGM battery required for start-stop system; located in trunk under floor
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Every control module on the 2008-2016 Audi S5 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Rear trunk lid, integrated in trunk handle or license plate area
🔧 VCDS or Autel
⚠️ Optional equipment. Calibration for parking guidelines may be needed.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2016 Audi S5 3.0L Supercharged V6 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.