The 2017 Audi A5 with the 2.0T EA888 Gen 3 engine is a solid platform, but suffers from a catastrophic piston ring land failure issue that can grenade motors before 100k miles. Otherwise, typical Audi MQB-platform issues like thermostat housing leaks and transmission cooler failures are the main concerns.
Piston Ring Land Failure / Complete Engine Rebuild
Occasional · high severity
Typical onset: 60,000-100,000 mi
Symptoms: excessive oil consumption (1 quart per 1,000 mi or worse), misfires under load, white or blue smoke from exhaust, rattling or knocking at cold start, sudden loss of compression
Fix: EA888 Gen 3 engines have weak piston ring lands that crack under boost, leading to oil burning and eventual catastrophic failure. Fix requires complete engine rebuild (pistons, rings, bearings, honing) or short block replacement. 18-24 labor hours for rebuild, 12-16 hours for short block swap. Audi extended warranty coverage ended, most owners pay out of pocket.
Estimated cost: $6,500-12,000
Transmission Oil Cooler Failure
Common · high severity
Typical onset: 70,000-120,000 mi
Symptoms: transmission slipping or harsh shifts, milky or strawberry-colored transmission fluid, coolant in transmission pan, overheating transmission, check engine light with transmission codes
Fix: The internal transmission oil cooler (inside the radiator) develops leaks that allow coolant and ATF to mix, destroying the transmission if not caught early. Requires replacement of cooler, full transmission flush (often multiple times), and transmission rebuild if contamination occurred. Preventive cooler replacement at 60k-80k miles recommended. 3-4 hours labor for cooler only, 15-25 hours if transmission damaged.
Symptoms: coolant puddles under car (driver side), low coolant warning light, overheating or fluctuating temp gauge, visible coolant seepage at thermostat housing, sweet smell from engine bay
Fix: Plastic thermostat housing and associated coolant flanges crack from heat cycling. Common on EA888 engines. Requires thermostat housing replacement, often with updated metal components, plus coolant flush. 2-3 hours labor. Related to NHTSA cooling system recalls.
Estimated cost: $600-1,000
Carbon Buildup on Intake Valves
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: rough idle or hesitation, loss of power especially on acceleration, misfires (P0300-P0304 codes), reduced fuel economy, long crank or hard starting when warm
Fix: Direct injection engines have no fuel wash over intake valves, allowing carbon deposits to build up. Requires walnut blasting of intake manifold and valves. Should be done every 50k-60k miles as preventive maintenance. 4-6 hours labor including intake manifold removal.
Estimated cost: $600-900
PCV System and Diverter Valve Failure
Occasional · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: oil consumption without visible leaks, whistling or hissing from engine bay, rough idle, check engine light with boost pressure codes, oil in intake piping
Fix: PCV valve and diaphragm in valve cover fail, causing vacuum leaks and excessive crankcase pressure. Diverter valve (boost recirculation) membranes tear, causing boost leaks. PCV requires valve cover replacement. Diverter valve separate replacement. 3-4 hours combined labor.
Estimated cost: $800-1,400
DSG Transmission Mechatronic Unit Failure
Occasional · high severity
Typical onset: 80,000-130,000 mi
Symptoms: transmission jerking or lurching, failure to shift or stuck in gear, transmission fault warning, limp mode (3rd gear only), grinding or whining from transmission
Fix: The mechatronic unit (valve body and TCU) develops solenoid or sensor failures. Requires removal of transmission, mechatronic replacement or rebuild, fluid flush, and adaptation. 8-12 hours labor. Can sometimes be repaired with individual solenoid replacement if caught early.
Estimated cost: $2,500-4,500
Fuel Filter / High Pressure Fuel Pump Issues
Occasional · medium severity
Typical onset: 80,000-120,000 mi
Symptoms: long crank or no start, stuttering or hesitation under load, limp mode, fuel pressure codes (P0087, P0088), rough running especially when cold
Fix: In-tank fuel filter clogs from ethanol fuel degradation, starving the high-pressure pump. HPFP itself also fails (common on EA888). Fuel filter requires tank drop. HPFP is engine-mounted. 2-3 hours for filter, 3-4 hours for HPFP.
Change oil every 5,000 miles with quality synthetic (VW 502.00 spec) to minimize piston ring issues; monitor oil level religiously
Replace transmission oil cooler preventively at 60k-80k miles before it fails and contaminates the transmission
Walnut blast intake valves every 50k-60k miles to prevent carbon buildup performance loss
Use top-tier fuel and replace in-tank fuel filter at 80k miles to protect high-pressure fuel pump
Keep detailed service records; extended powertrain warranty highly recommended if buying used
Beautiful car with excellent driving dynamics, but the piston ring land lottery makes it a risky used buy unless you have a $10k engine rebuild fund or confirmed proof the issue was already addressed under warranty.
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: Battery located under front passenger seat or in trunk; AGM required for start-stop system
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Every control module on the 2017-2026 Audi A5 — 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.
⚠️ Memory seats and massage functions. Calibration required.
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.
ENGINE AND ENGINE COOLING:COOLING SYSTEM · 18V229000
2018-04-11
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5 Cabriolet, A5 Sedan and Audi Q5 vehicles, 2012-2015 Audi A6 vehicles and 2013-2016 Audi A4 Sedan and A4 allroad vehicles. These vehicles, equipped with 2.0l Turbo FSI engines, have an electric coolant pump that can either become blocked with debris from the cooling system causing it to overheat or can short-circuit from moisture within the pump.
Consequence: A blocked pump or a short-circuited pump can increase the risk of a fire.
Remedy: Audi will notify owners, and dealers will replace the pumps, free of charge. The recall began September 14, 2018. Owners may contact Audi customer service at 1-800-253-2834. Audi's number's for this recall is 19N3/19N4. Note: This recall is in additional to the coolant pump software update applied as a remedy under recall 17V002.
ENGINE AND ENGINE COOLING:COOLING SYSTEM · 17V002000
2017-01-03
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5, A5 Cabriolet and Q5 vehicles, 2013-2016 Audi Allroad and Audi A4 vehicles and 2012-2015 Audi A6 vehicles. These vehicles, equipped with 2.0l Turbo FSI engines, have an electric coolant pump that can be blocked with debris from the cooling system, resulting in the pump overheating.
Consequence: If the coolant pump overheats, it can increase the risk of a fire.
Remedy: Audi will notify owners, and dealers will update the software so that the power supply to the coolant pump is deactivated if the pump becomes blocked with debris, free of charge. The recall is expected to begin February 20, 2017. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 19M1.
Performance
Horsepower
252hp
Torque
273lb-ft
0–60 mph
5.6sec
Quarter mile
14.1sec
Top speed
130mph
Capability & size
Curb weight
3,814lb
Wiper blades
2017-2024 A5 Coupe (B9 generation, starting mid-2017 as 2018 model year). Driver size increased to 26 inches. No rear wiper on coupe body style.
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 2017 Audi A5 2.0L Turbo I4 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.