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2021 Audi RS6 Avant

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 RS6 Avant.

Transmission Automatic (S8)

The 2021 Audi RS6 Avant pairs an eight-speed automatic transmission with EPA ratings of 15 mpg city, 22 highway, and 17 combined, delivering the performance wagon's expected blend of speed and practicality. Reliability data shows just four total owner complaints, with the electrical system emerging as the top concern, while a dozen recalls have been recorded for the model year. Together, these figures suggest a vehicle that, despite its limited complaint volume, carries a notable recall burden that researchers should weigh against its enthusiast appeal.

Model year202620252024202320222021

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

EPA fuel economy15/22/17 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI Refer to the appropriate service information for options and battery usage. battery, OE oil filter 06M115331A. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI Refer to the appropriate service information for options and battery usage.OEM · verified
Tail / brake / turnLAMPOEM · verified
Tire size275/35ZR21/XL (103Y)OEM · verified
Wheel / rim10.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter06M115331A alt 06M115441G
Engine air filter4K0133843G
Spark plug0P2905601
Battery000915089BC
Front wiper blades4K1998002D
Cabin air filter4M0819439C

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S8)

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 22 / 17 mpg
DrivetrainAll-Wheel Drive
Passenger volume101 cu ft
Cargo volume30 cu ft
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine DOT 4 brake fluid. The firing order is 1-5-4-8-6-3-7-2.

Lubricants & capacities

Brake FluidDOT 4
Clutch FluidDOT 4

Engine torques

Cylinder Head InstructionsOnly use new bolts.
Oil Pump to Cylinder BLock Bolts/Studs80.0 inch lbs. ft-lbs

Ignition

Cylinder Firing Order1-5-4-8-6-3-7-2

Battery & A/C

RefrigerantR1234yf
Refrigerant CapacityPR Code TV8
Oil Capacity3.4-4.0 oz

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 1 stages
1Bolts 1-1011 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 10,000 mi; spark plugs every 30,000 mi.

Every 10,000 miBrake Linings (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire Repair Kit Sealant (inspect)
Every 20,000 miAir Conditioning Evaporator Case Drain (inspect) · Body Water Drains (inspect) · Brake Line (inspect) · Cabin Air Filter (replace) · Door Hinge (lubricate) · Engine Air Filter Element (replace)
Every 30,000 miSpark Plugs (replace)
Every 40,000 miTransmission Assembly (drain & refill)
Every 60,000 miDrive Axle Assembly (drain & refill) · Drive Belt (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 2021 Audi RS6 Avant dominate in one area — the electrical system, 2 of 4 reports (50%), well ahead of the next concern. That matters, because the electrical system are also the target of recall 25V-201 on this vehicle — so the single most useful check before buying or servicing one is confirming it was actually performed. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the electrical system pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

12
Open recalls
NHTSA campaigns
1038
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
4
Owner complaints
0 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 4 complaints on record, top 3 components.

Electrical System2
Visibility/Wiper,Forward Collision Avoidance1
Steering,Power Train,Electrical System1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

25V201000Electrical System: Instrument Cluster/PanelReported 31/03/2025

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 SQ8, A6 SEDAN, A7, A8, Q7, Q8, RS6 Avant, RS7, RSQ8, S6 SEDAN, S7, S8, A6 Allroad, and SQ7 vehicles. Due to a software error, the instrument panel… Remedy: Dealers will update the instrument panel module software, free of charge. Owner notification letters were mailed April 24, 2025. Owners may contact Audi customer service at…

25V900000Back Over Prevention: Sensing System: CameraReported 19/12/2025

Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as… Remedy: Dealers will update the software, free of charge. Owner notification letters were mailed January 14, 2026. Owners may contact Audi customer service at 1-800-253-2834. Audi's…

Technical service bulletins NHTSA · verified

Showing 5 of 1038 bulletins on record with NHTSA.

BulletinDateComponentSummary
TSB_2079747_22026-06-30StructureThis bulletin provides information regarding various complaints about front or rear door…
TSB_2076404_82026-06-29Unknown Or OtherThis bulletin provides a deployment overview for customer service packages MLB and MQB…
TSB_2074640_32026-06-26EngineThis bulletin provides information when there is increased oil consumption; >0.5ltr/1000…
TSB_2074729_32026-06-23Electrical SystemThis bulletin provides informationwhen noises/vibration are detected from front of…
TSB_2059335_72026-06-23Electrical SystemThis bulletin provides information when there are noises from the area around the…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific RS6 Avant. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group R batteryEngine oil filter 06M115331AEngine air filter 4K0133843GSpark plug 0P2905601Battery 000915089BC

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBsOBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

Does the 2021 RS6 Avant have open recalls?

NHTSA lists 12 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the RS6 Avant get?

EPA figures are 15 city / 22 highway / 17 combined mpg.