Audi›A4/S4›2015›Overview/audi/a4-s4/2015/base/

2015 Audi A4/S4

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2015 A4/S4.

Body PASSENGER CARTransmission Automatic (AV-S8)

The 2015 Audi A4/S4 is a passenger car equipped with an automatic AV‑S8 transmission and a 7.0‑quart oil capacity that accepts 5W‑40, 5W‑30, or 0W‑40 viscosities. It returns an EPA combined rating of 26 mpg, with 24 mpg city and 31 mpg highway. Owner reports total 44 complaints, the leading category being the engine, and the model year was subject to four recalls, a record that places this year under scrutiny for reliability.

Model year2016 2015 2014 2013 2012 2011 2010

Quick specs

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

Engine oil capacity7.0 qtOEM · verified

Engine oil type5W-40 / 5W-30 / 0W-40OEM · verified

EPA fuel economy24/31/26 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 94R · 800 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 · 800 CCAOEM · verified

Tire sizeP245/40R18OEM · verified

Wheel / rimSTANDARD 8-J; OPTIONAL 8.5-J inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	06D115475 alt 06E115446
Engine air filter	8K0133843
Fuel filter	8K0201511TA
Spark plug	06H905621A alt 06H905601A
Battery	000915089J alt 000915089F
Front wiper blades	8K1955426A alt 8K1955425A
Serpentine belt	06E903137AB alt 06E903137T
Thermostat	06E121119B alt 06E121111AL
Cabin air filter	8K0819439C

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic (AV-S8)

Ratings & economy EPA / vPIC

EPA city / highway / combined	24 / 31 / 26 mpg
Drivetrain	Front-Wheel Drive
Passenger volume	91 cu ft
Cargo volume	12 cu ft
Recommended fuel	Premium Gasoline

Service quick specs OEM factory data

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

This engine holds 7.0 qt of 5W-40 / 5W-30 / 0W-40 engine oil, DOT 4 brake fluid. Torque the oil drain plug to 18.4 ft-lbs. The firing order is 1-4-3-6-2-5. 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

Brake Fluid	DOT 4
Engine Coolant	Audi coolant G13 TL-VW774J
Engine Coolant Capacity	12.6
Engine Oil	5W-40 · 5W-30 · 0W-40
Engine Oil Capacity	7.0 qt
Fuel Tank Capacity	16.1 gallons

Engine torques

Intake Manifold to Engine Bolts	Upper: 1st; Lower: 8.8 ft/lbs
Exhaust Manifold to Cylinder Head Bolts	1st step:
Engine Oil Pan Drain Plug	27.1 ft-lbs
Engine Oil Pan Drain Plug	18.4 ft-lbs
Engine Valve Cover Bolts	7.2

Chassis torques

Transfer Case Fill Plug	OB6: 25.0, OBK, OB2: 9.0 ft-lbs
Transfer Case Drain Plug	OB6: 25.0, OBK, OB2: 9.0 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Cylinder Firing Order	1-4-3-6-2-5
Spark Plug Manufacturer	Denso
Spark Plug Torque	22 ft-lbs
Spark Plug Manufacturer	Denso
Spark Plug Torque	22 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	18.90-20.00 lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	3.38-4.05 oz
Standard BCI Group Number	94R
Standard BCI Cranking Performance	800 cca
Optional BCI Group Number	48

Service checks

Pressure Test	14.5 psi
Radiator Cap Pressure Relief	20-23 psi
Fuel Pump Pressure Maximum	87
Residual Pressure	44 psi
Regulated Fuel System Pressure (With Vacuum)	72.5-116 psi
Residual Pressure	43 psi
Regulated Fuel System Pressure (With Vacuum)	72.5-116 psi
Residual Pressure	43 psi

Brakes

Brake Caliper Bolt to Carrier Torque	Front: 22.0; Rear: 26 Use; Front: 22; Rear: 26
Brake Caliper Carrier to Hub Bolt Torque	Front: 145; Rear: 75 use; Front: 145; Rear: 74
ABS Sensor Torque	6 / 6.6 / NS
Minimum Pad Thickness	Front: 0.394; Rear: 0.276 front
Vented Rotor Minimum Thickness for Replacement	Front w/1LT and 1LY:

Multi-step torque procedures OEM · verified

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

Cylinder Head — tightening sequence 5 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
4	crankcase vent bolt pretighten to 6.0 ft. lbs.	6 ft. lbs
5	90 degrees	90 degrees

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 every 30,000 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 (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) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Drive Axle Assembly (inspect)
Every 20,000 mi	Air Conditioning Evaporator Case Drain (inspect) · Air Intake Hose Debris Screen (clean) · Battery (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Drive Axle Assembly (inspect)
Every 30,000 mi	Spark Plugs (replace)
At 35,000 mi	Brake Rotor (inspect) · Door Hinge (lubricate) · Hood Latch (lubricate) · Spark Plugs (replace) · Transmission Fluid & Filter (replace)
Every 40,000 mi	Brake Rotor (inspect) · Door Hinge (lubricate) · Hood Latch (lubricate) · Transmission Fluid & Filter (replace)
At 55,000 mi	Drive Belt (replace) · Engine Air Filter Element (replace) · Engine Air Filter Housing (clean)
Every 60,000 mi	Drive Belt (replace) · Engine Air Filter Element (replace) · Engine Air Filter Housing (clean)

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 2015 Audi A4/S4 lead in one area — the engine, 11 of 44 reports (25%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 4 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the engine 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

908

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

4 involved a crash · 0 a fire

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

Overall★★★★★

Frontal★★★★★

Side★★★★★

Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 44 complaints on record, top 8 components.

Engine11

Power Train5

Engine & Engine Cooling3

Electrical System3

Unknown Or Other3

Air Bags3

Steering3

Engine,Fuel/Propulsion System2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 908 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
TSB_2074640_3	2026-06-26	Engine	This bulletin provides information when there is increased oil consumption; >0.5ltr/1000…
TSB_2074729_3	2026-06-23	Electrical System	This bulletin provides informationwhen noises/vibration are detected from front of…
TSB_2028902_5	2026-06-23	Power Train	This bulletin provides informaiton when the transmission warning message appears in the…
TSB_2059335_7	2026-06-23	Electrical System	This bulletin provides information when there are noises from the area around the…
TSB_2082086_1	2026-06-22	Power Train	This bulletin provides informaiton when there is a leak on the oil hole between 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 A4/S4. 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 7.0 qt Engine oil filter 06D115475 Engine air filter 8K0133843 Fuel filter 8K0201511TA Spark plug 06H905621A

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 2015 A4/S4 take?

7.0 qt of 5W-40, 5W-30 or 0W-40 meeting Audi specification 502 00 or equivalent., per the factory manual.

Does the 2015 A4/S4 have open recalls?

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

What gas mileage does the A4/S4 get?

EPA figures are 24 city / 31 highway / 26 combined mpg.