Audi›A6/S6/Quattro/Avant›2009›Overview/audi/a6-s6-quattro-avant/2009/base/

2009 Audi A6/S6/Quattro/Avant

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2009 A6/S6/Quattro/Avant.

Body PASSENGER CARTransmission Automatic (variable gear ratios)

The 2009 Audi A6/S6/Quattro/Avant is a passenger car equipped with an automatic transmission featuring variable gear ratios. It requires 10.5 qt of engine oil with a recommended viscosity of 5W‑30 or 5W‑40 API and delivers EPA‑rated fuel economy of 18 mpg city, 27 mpg highway, and 21 mpg combined. Owner feedback for the model year shows 21 total complaints, with the air‑bag system being the top complaint area, and the vehicle was subject to four recalls. These figures position the 2009 model year among the lower‑complaint examples in the A6’s reliability record.

Model year2011 2010 2009 2008 2007

Quick specs

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

Engine oil capacity10.5 qtOEM · verified

Engine oil type5W-30 / 5W-40 APIOEM · verified

Lug nut torque89 ft-lbsOEM · verified

EPA fuel economy18/27/21 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 48 · 570 CCA battery, OE oil filter 06D115475. 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 48 · 570 CCAOEM · verified

Tire sizePREM PKG P245-45R17; PREM PLUS P245-40R18;PRESTIGE P245-40R18OEM · verified

OE service part numbers OEM · verified

Engine oil filter	06D115475 alt 06E115562C
Engine air filter	4F0133843
Fuel filter	4F0201511E
Spark plug	101905611A alt 101905631A
Battery	000915089G alt 000915089J
Front wiper blades	4F1955426C alt 4F1955425F
Serpentine belt	06E903137AB alt 06E903137N
Thermostat	06E121119B alt 06E121111G
Cabin air filter	4F0898438C alt 4F0820261

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic (variable gear ratios)

Ratings & economy EPA / vPIC

EPA city / highway / combined	18 / 27 / 21 mpg
Drivetrain	Front-Wheel Drive
Recommended fuel	Premium Gasoline

Service quick specs OEM factory data

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

This engine holds 10.5 qt of 5W-30 / 5W-40 API engine oil, SYNTHETIC · 75W-90 · GL-4 in the differential, DOT 4 brake fluid. Torque lug nuts to 89 ft-lbs, the oil drain plug to 22.1 ft-lbs. The firing order is 1-6-5-10-2-7-3-8-4-9. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission Fluid	Audi part number G055005A2
Automatic Transmission Fluid Capacity	10.5
Brake Fluid	DOT 4
Differential Gear Oil	SYNTHETIC · 75W-90 · GL-4
Differential Gear Oil Capacity	1.5 Pints
Differential Gear Oil Capacity	1.9 Pints
Engine Oil	5W-30 · 5W-40 · API
Engine Oil Capacity	10.5 qt

Engine torques

Exhaust Manifold to Cylinder Head Bolts	18.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	18.4 ft-lbs
Engine Oil Pan Drain Plug	22.1 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	15 ft-lbs
Engine Valve Cover Bolts	7.2

Chassis torques

Lug Nuts	89 ft-lbs
Transfer Case Fill Plug	20.0 ft-lbs
Transfer Case Drain Plug	7.0 ft-lbs

Ignition

Cylinder Firing Order	1-4-3-6-2-5
Cylinder Firing Order	1-5-4-8-6-3-7-2
Cylinder Firing Order	1-6-5-10-2-7-3-8-4-9
Curb Idle Speed (No Load)	650 rpm
Spark Plug Torque	22.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Standard BCI Group Number	48
Standard BCI Cranking Performance	570 cca
Optional BCI Group Number	95R
Optional BCI Cranking Performance	850 cca
Optional BCI Group Number	49
Optional BCI Cranking Performance	760 cca
Standard BCI Group Number	48

Service checks

Pressure Test	14.5 psi
Radiator Cap Pressure Relief	20-23 psi
Pressure Test	14.5 psi
Radiator Cap Pressure Relief	20-23 psi
Thermostat Opening Temperature	188 °F
Pressure Test	14.5 psi
Radiator Cap Pressure Relief	20-23 psi
Thermostat Opening Temperature	221 °F

Brakes

Torque Caliper to Bracket	25 ft-lbs / 22 ft-lbs
Torque to Knuckle	103 ft-lbs / 144 ft-lbs / 140 ft-lbs
Torque Caliper to Bracket	25 ft-lbs / 22 ft-lbs
Torque to Knuckle	103 ft-lbs / 144 ft-lbs / 140 ft-lbs
Rotor Nominal Thickness From	0.472 in
Rotor Nominal Thickness To	0.472 in
Rotor Discard at or Under	0.394 in
Rotor Nominal Thickness From	0.472 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

22 ft. lbs., Step 2: 90

22 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

20 ft. lbs., step 2: 90

20 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

20 ft. lbs., step 2: 90

20 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

15 ft. lbs., step 2: 22 ft. lbs., 90

15 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

15 ft. lbs., step 2: 22 ft. lbs., step 3: 90 degrees.

15 ft. lbs

Cylinder Head — tightening sequence 3 stages

Prep Do not reuse old bolts. Use new bolts coated with clean engine oil.

1	30.0 ft. lbs.	30 ft. lbs
2	90 degrees	90 degrees
3	90 degrees	90 degrees

Cylinder Head — tightening sequence 3 stages

Prep Do not reuse old bolts. Use new bolts coated with clean engine oil.

1	30.0 ft. lbs.	30 ft. lbs
2	90 degrees	90 degrees
3	90 degrees	90 degrees

Cylinder Head — tightening sequence 3 stages

Prep Do not reuse old bolts. Use new bolts coated with clean engine oil. Tighten all bolts to finger tight then continue on with the following procedure.

1	30.0 ft. lbs.	30 ft. lbs
2	90 degrees	90 degrees
3	90 degrees	90 degrees

Engine Flywheel Bolts — tightening sequence 1 stages

44 ft. lbs., Step 2: 90

44 ft. lbs

Engine Flywheel Bolts — tightening sequence 1 stages

44 ft. lbs., Step 2: 45

44 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

11 ft. lbs., step 2: 18

11 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

hand tighten, step 2

15 ft. lbs

Intake Manifold to Engine Bolts — tightening sequence 1 stages

in sequence 1-10

6 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

install by hand until touches exhaust manifold. Step 2

7.3 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 at 5,000 mi; spark plugs at 55,000 mi.

At 5,000 mi	Brake System (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Headlamp Washer Nozzle (inspect) · Headlamp Washer System (inspect fluid level) · Tire & Wheel Assembly (inspect)
Every 5,000 mi	Tire & Wheel Assembly (rotate)
Every 10,000 mi	Brake System (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Headlamp Washer Nozzle (inspect) · Headlamp Washer System (inspect fluid level) · Tire & Wheel Assembly (inspect)
At 15,000 mi	Air Conditioning Evaporator Case Drain (inspect) · Air Intake Hose Debris Screen (clean) · Battery (inspect) · Body Latches, Locks & Hinges (lubricate) · CV Joint Boot (inspect) · Cabin Air Filter (replace)
Every 20,000 mi	Air Conditioning Evaporator Case Drain (inspect) · Air Intake Hose Debris Screen (clean) · Battery (inspect) · Body Latches, Locks & Hinges (lubricate) · CV Joint Boot (inspect) · Cabin Air Filter (replace)
At 35,000 mi	Brake Rotor (inspect) · Headlamp (inspect alignment) · Hood Latch (lubricate) · Power Steering System (inspect fluid level) · Sunroof Assembly (inspect)
Every 40,000 mi	Brake Rotor (inspect) · Headlamp (inspect alignment) · Hood Latch (lubricate) · Power Steering System (inspect fluid level) · Sunroof Assembly (inspect)
At 55,000 mi	Engine Air Filter Element (replace) · Engine Air Filter Housing (clean) · Spark Plugs (replace)
Every 60,000 mi	Engine Air Filter Element (replace) · Engine Air Filter Housing (clean) · Spark Plugs (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 2009 Audi A6/S6/Quattro/Avant dominate in one area — the air bags, 17 of 21 reports (81%), well ahead of the next concern. That matters, because the air bags are also the target of recalls 18V-427 and 18V-004 on this vehicle — so the single most useful check before buying or servicing one is confirming they were actually performed. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the air bags 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.

Open recalls

NHTSA campaigns

712

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

0 involved a crash · 0 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 21 complaints on record, top 5 components.

Air Bags17

Electrical System1

Power Train,Electronic Stability Control (Esc)1

Structure1

Unknown Or Other1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

18V427000Air Bags:Frontal:Passenger Side:Inflator ModuleReported 22/06/2018

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2005-2008 Audi A4 Sedan, A4 Avant, S4 Avant and S4 Sedan, 2007-2008 RS4 Sedan, 2004 RS4 Cabriolet, 2007-2009 A4 Cabriolet and S4 Cabriolet, 2005-2011… Remedy: Audi has notified owners, and dealers will replace the passenger frontal air bag with an alternate remedy part, free of charge. The recall began June 29, 2018. Owners may contact…

18V004000Air Bags:Frontal:Passenger Side:Inflator ModuleReported 04/01/2018

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2010-2011 Audi A6 Avant, A6 Sedan and S6 Sedan vehicles, ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois… Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. Audi mailed an interim owner notification March 02, 2018. When parts to…

Technical service bulletins NHTSA · verified

Showing 5 of 712 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
TSB_2070568_6	2026-04-22	Unknown Or Other	This bulletin provides information about professional noise analysis with the VAS 611 015…
TSB_2070568_5	2025-08-19	Unknown Or Other	This bulletin provides information about professional noise analysis with the VAS 611 015…
TSB_2070568_4	2025-07-10	Unknown Or Other	This bulletin provides information about professional noise analysis with the VAS 611 015…
TSB_2075530_2	2025-03-12	Engine	This bulletin provides informatin when the engine does not run smoothly at idling speeds.
A2724842074729_2	2024-12-06	Electrical System	This bulletin provides information in circumstances where there are noises/vibration from…

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 A6/S6/Quattro/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 48 battery Vehicles taking 10.5 qt Engine oil filter 06D115475 Engine air filter 4F0133843 Fuel filter 4F0201511E Spark plug 101905611A

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2009 A6/S6/Quattro/Avant take?

10.5 qt of 5W-30 OR 5W-40 API MEETING VW SPECIFICATION VW50200, per the factory manual.

Does the 2009 A6/S6/Quattro/Avant have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the A6/S6/Quattro/Avant get?

EPA figures are 18 city / 27 highway / 21 combined mpg.

2009 Audi A6/S6/Quattro/Avant

Quick specs

Fitment & sizes

OE service part numbers OEM · verified

Full specifications

Engine & drivetrain NHTSA vPIC

Ratings & economy EPA / vPIC

Service quick specs OEM factory data

Lubricants & capacities

Engine torques

Chassis torques

Ignition

Battery & A/C

Service checks

Brakes

Multi-step torque procedures OEM · verified

Factory maintenance schedule OEM · verified

Reliability & federal safety record

Owner complaints filed with NHTSA, by component

Recalls NHTSA · verified

Technical service bulletins NHTSA · verified

Common OBD-II trouble codes

VIN tools

Vehicles with shared specs

Reference guides

Related vehicles

Other years

Frequently asked