2016 AUDI S5

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

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

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

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

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

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