Audi›A4/S4/Avant›2008›Overview/audi/a4-s4-avant/2008/base/

2008 Audi A4/S4/Avant

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2008 A4/S4/Avant.

Body PASSENGER CAR

The 2008 Audi A4, S4, and Avant represent Audi's compact executive passenger car platform, powered by engines requiring 4.8 quarts of oil with a recommended viscosity of 5W-30 or 5W-40 meeting API standards, a specification consistent with the brand's performance-oriented engineering tolerances; this model year saw six recalls issued by the manufacturer, with owner complaints totaling 191 filed reports, the majority of which centered on air bag systems, placing this generation within a period of the A4's history that required внимательное ownership awareness regarding that specific component area.

Model year2008 2007 2006 2005 2004

Quick specs

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

Engine oil capacity4.8 qtOEM · verified

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

Lug nut torque89 ft-lbsOEM · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 94R · 640 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 94R · 640 CCAOEM · verified

Tail / brake / turnTURNOEM · verified

Tire sizeP235-45R17, S-Line Pkg: P235-40R18OEM · verified

OE service part numbers OEM · verified

Engine oil filter	06D115475 alt 06E115446
Engine air filter	06C133843
Fuel filter	4F0201511E
Spark plug	06H905601A alt 101905621
Battery	000915089BE alt 000915089J
Front wiper blades	4B1955425C alt 8H1955426C
Serpentine belt	079903137E
Thermostat	06B121119C alt 06D121111G
Cabin air filter	8E0819439

Service quick specs OEM factory data

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

This engine holds 4.8 qt of 5W-30 / 5W-40 API engine oil, DOT 4 brake fluid. Torque lug nuts to 89 ft-lbs, the oil drain plug to 22.1 ft-lbs. The firing order is 1-5-4-8-6-3-7-2. 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 G060162A2
Automatic Transmission Fluid Capacity	8.5-11.0
Brake Fluid	DOT 4
Engine Oil	5W-30 · 5W-40 · API
Engine Oil Capacity	4.8 qt
Engine Oil	5W-30 · 5W-40 · API
Engine Oil Capacity	9.3 qt
Engine Oil	5W-30 · 5W-40 · API

Engine torques

Engine Flywheel Bolts	Long bolts
Intake Manifold to Engine Bolts	6.6 ft-lbs
Intake Manifold to Engine Bolts	7.3 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	18.4 ft-lbs
Engine Oil Pan Drain Plug	27.1 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	30.0 ft-lbs
Transfer Case Drain Plug	30.0 ft-lbs
Transfer Case Fill Plug	30.0 ft-lbs
Transfer Case Drain Plug	30.0 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Cylinder Firing Order	1-4-3-6-2-5
Cylinder Firing Order	1-5-4-8-6-3-7-2
Spark Plug Manufacturer	Audi/VW
Spark Plug Torque	22 ft-lbs
Spark Plug Torque	22.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Standard BCI Group Number	94R
Standard BCI Cranking Performance	640 cca
Standard BCI Group Number	49
Standard BCI Cranking Performance	760 cca
Standard BCI Group Number	49
Standard BCI Cranking Performance	850 cca

Service checks

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

Brakes

Torque Caliper to Bracket	26 ft-lbs / 22 ft-lbs
Torque to Knuckle	55 ft-lbs / 140 ft-lbs / 147 ft-lbs
Minimum Pad Thickness	Front: 0.394; Rear: 0.276 front
Rotor Nominal Thickness From	0.394 in
Rotor Nominal Thickness To	0.394 in
Rotor Discard at or Under	0.315 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

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

10 ft. lbs., step 2: 90

10 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

Cylinder Head — tightening sequence 5 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
4	front bolts only 6.0 ft. lbs.	6 ft. lbs
5	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

4 ft. lbs., step 2: 9 ft. lbs., step 3: 12 ft. lbs., step 4: step 18

4 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

11 ft. lbs., step 2: 18

11 ft. lbs

Main Bearings — tightening sequence 1 stages

48 ft. lbs., Step 2: 90

48 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 5,000 mi; spark plugs at 55,000 mi.

At 5,000 mi	Brake System (inspect) · Headlamp Washer Nozzle (inspect) · Headlamp Washer System (inspect fluid level) · Tire & Wheel Assembly (inspect) · Windshield Washer System (inspect) · Windshield Wiper Blade (inspect)
Every 5,000 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate) · Windshield Washer System (inspect fluid level)
Every 10,000 mi	Brake System (inspect) · Headlamp Washer Nozzle (inspect) · Headlamp Washer System (inspect fluid level) · Tire & Wheel Assembly (inspect) · Windshield Washer System (inspect) · Windshield Wiper Blade (inspect)
At 15,000 mi	Air Intake Hose Debris Screen (clean) · Battery (inspect) · Body Latches, Locks & Hinges (lubricate) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Door Stop (lubricate)
Every 20,000 mi	Air Intake Hose Debris Screen (clean) · Battery (inspect) · Body Latches, Locks & Hinges (lubricate) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Door Stop (lubricate)
At 35,000 mi	Brake Rotor (inspect) · Hood Latch (lubricate) · Power Steering System (inspect fluid level)
Every 35,000 mi	Headlamp (inspect alignment) · Transmission Assembly (drain & refill)
Every 40,000 mi	Air Conditioning Evaporator Case Drain (inspect) · Brake Rotor (inspect) · Engine Air Filter Element (replace) · Engine Air Filter Housing (clean) · Hood Latch (lubricate) · Power Steering System (inspect fluid level)
At 55,000 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 2008 Audi A4/S4/Avant dominate in one area — the air bags, 126 of 191 reports (66%), well ahead of the next concern. That matters, because the air bags are also the target of recalls 18V-427 and 17V-032 on this vehicle — so the single most useful check before buying or servicing one is confirming they were actually performed. 8 of the reports describe a crash and 1 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

463

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

191

Owner complaints

8 involved a crash · 1 a fire

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

Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 191 complaints on record, top 8 components.

Air Bags126

Engine9

Power Train7

Exterior Lighting6

Engine & Engine Cooling4

Tires4

Power Train,Electrical System,Air Bags3

Unknown Or Other2

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…

17V032000Air Bags:Frontal:Passenger Side:Inflator ModuleReported 11/01/2017

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2009 Audi A4 Cabriolet, S4 Cabriolet, A6 Avant, A6 Sedan and S6 Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, the… Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began March 30, 2018. Owners may contact Audi customer service…

Technical service bulletins NHTSA · verified

Showing 5 of 463 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
A9124632044694_3	2024-02-07	Equipment	This bulletin provides information pertaining to MMI Navigation database concerns.
A912306202432310	2023-12-21	Electrical System	This bulletin provides information when the parking assistance provides false warnings.
A9023562032113_8	2023-11-16	Electrical System	This bulletin provides general information about the outside air temperature reading.
A0023812070568_2	2023-11-07	Equipment	This bulletin provides information on the VAS 611 015 PICO-NVH tool for professional…
A9423672071954_1	2023-10-30	Exterior Lighting	This bulletin provides information pertaining to when there are foreign objects inside of…

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 A4/S4/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 94R battery Vehicles taking 4.8 qt Engine oil filter 06D115475 Engine air filter 06C133843 Fuel filter 4F0201511E Spark plug 06H905601A

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 2008 A4/S4/Avant take?

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

Does the 2008 A4/S4/Avant have open recalls?

NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.

2008 Audi A4/S4/Avant

Quick specs

Fitment & sizes

OE service part numbers OEM · verified

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