The 2018 RS5 with the 2.9L twin-turbo V6 (EA855 evo) is relatively new but already showing catastrophic engine failure patterns tied to connecting rod bearing issues, plus typical VAG electronic gremlins and transmission cooling system weaknesses that can destroy an expensive dual-clutch unit.
Connecting Rod Bearing Failure (Spun Bearings)
Occasional · high severity
Typical onset: 30,000-70,000 mi
Symptoms: knocking or ticking noise on cold start that may disappear when warm, metallic rattling under load or acceleration, sudden oil pressure warning light, catastrophic engine failure if ignored
Fix: Complete engine rebuild or short block replacement. 25-35 hours labor to drop engine, disassemble, measure journals, replace bearings at minimum. Most cases require full short block due to crank damage. Some owners report this happening under warranty, but post-warranty it's catastrophic financially. Pattern suggests oil starvation or bearing material defect.
Estimated cost: $15,000-25,000
Transmission Oil Cooler Line Leaks
Common · high severity
Typical onset: 40,000-80,000 mi
Symptoms: transmission fluid visible under car near front, transmission overheating warnings on MMI, burnt fluid smell, harsh shifts or slipping when hot
Fix: The cooler lines to the 8-speed ZF automatic crack at crimp points or where they pass near exhaust. If trans fluid leaks completely and runs dry, you're looking at internal clutch damage. Catching early is critical. 3-5 hours to replace lines and cooler, flush system, verify no clutch damage. Must use OE lines—aftermarket fails quickly.
Estimated cost: $800-1,400
Transmission Mount Failure
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: clunking when shifting from Park to Drive or Reverse, excessive driveline vibration at idle, visible torn rubber on mount during inspection, transmission appears to sag or sit lower on one side
Fix: High-torque V6 tears the lower transmission mount, especially if you launch hard or use Dynamic mode frequently. 2-3 hours labor to support trans on jack, remove mount, install OEM replacement. Upgraded polyurethane mounts available but increase NVH. Do not ignore—failed mount stresses CV axles and can damage trans case brackets.
Estimated cost: $450-750
Carbon Buildup on Intake Valves
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: rough idle or misfires on cold start, hesitation or stumble during acceleration, reduced fuel economy, P0300-range misfire codes
Fix: Direct-injection only means no fuel washing valves. Carbon accumulates. Walnut blasting both banks required. 6-8 hours to remove intake manifolds, mask ports, blast valves, vacuum debris, reassemble. Some shops include intake manifold gaskets and coil pack inspection in the service. Catch-can installation helps prevent recurrence but doesn't eliminate it.
Estimated cost: $800-1,200
Water Pump and Thermostat Housing Leaks
Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: coolant smell in cabin or engine bay, visible coolant residue on front of engine, slow coolant loss requiring top-ups, overheating if pump fails completely
Fix: Plastic impeller water pumps and thermostat housings crack or develop pinhole leaks. Often caught during oil changes when coolant staining is visible. 4-6 hours to replace water pump, thermostat, and housing as an assembly. Must pressure-test system after. Use OE or Geba parts—cheap pumps fail within 10k miles. Timing not affected (chain-driven accessories).
Estimated cost: $900-1,500
MMI Infotainment Freezing and Black Screen
Occasional · low severity
Symptoms: screen goes black and unresponsive, system freezes during drive, backup camera fails to display, climate controls inaccessible
Fix: Software bug in MMI system or failing MMI control unit. Often fixed with software update at dealer (1 hour labor). If hardware failure, MMI unit replacement required—2-3 hours to remove center console trim, pull unit, code new unit to VIN. Check for TSBs and software updates first before condemning hardware.
Estimated cost: $200-2,500
Owner tips
Install an oil catch can early—it significantly reduces carbon buildup and may help mitigate bearing oil starvation issues.
Check transmission fluid level and condition every 20k miles even though Audi says lifetime fill—cooler line leaks are common and running low destroys clutches.
Listen carefully for ANY engine ticking or knocking—bearing failure happens fast and ignoring it means engine replacement, not repair.
Use only OE oil spec (VW 508.00/509.00) and change at 5,000 mi intervals despite 10k recommendation, especially if you track or drive hard.
Budget $2,000/year for unexpected repairs after warranty—this platform has expensive problems that aren't 'if' but 'when'.
Amazing to drive but bearing failures and transmission issues make this a financial grenade post-warranty—only buy with comprehensive extended warranty or self-insure with $10k reserve.
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 panel
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Every control module on the 2018-2019 Audi RS5 — 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 standard; each seat has separate module; basic adaptation only
Rear View Camera Control Module (RVC)0.5 hr R&Rsecurity gateway +0.3 hr▸ programming details
📍 Trunk lid, integrated with camera
🔧 ODIS-E/S or Autel IA900 + AutoAuth
⚠️ Rear camera with dynamic guidelines; requires calibration for guideline accuracy
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.
Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Consequence: A disabled passenger air bag increases the risk of injury in the event of a crash.
Remedy: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
ELECTRICAL SYSTEM:12V/24V/48V BATTERY · 20V760000
2020-12-09
Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi RS5 Coupe vehicles. An incorrect positive battery terminal cover was installed.
Consequence: In the event of a rear crash, the incorrect cover can cause the 12-volt power supply to be compromised, preventing the vehicle doors from being opened from the outside, or the hazard warning lights from functioning, increasing risk of injury.
Remedy: Audi will notify owners, and dealers will replace the positive terminal cover, free of charge. The recall began January 19, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 27i6.
Performance
Horsepower
444hp
Torque
443lb-ft
0–60 mph
3.7sec
Quarter mile
12.0sec
Top speed
174mph
Fuel economy (EPA)
City
18mpg
Highway
26mpg
Combined
21mpg
Fuel
Premium Gasoline
Capability & size
Curb weight
3,912lb
EPA class
Subcompact Cars
Wiper blades
B9 generation coupe, no rear wiper. Sportback variant would have rear wiper
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 2018 Audi RS5 2.9L Twin-Turbo 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.