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2003 Audi TT/TTS Coupe/Roadster

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 TT/TTS Coupe/Roadster.

Body PASSENGER CARTransmission Automatic (S6)

The 2003 Audi TT/TTS Coupe/Roadster is a passenger car offered in both coupe and roadster configurations, paired with an automatic (S6) transmission and an engine requiring 4.8 quarts of oil in 5W-30, 5W-40, or 10W-30 API grades. Fuel economy is rated by the EPA at 18 mpg city, 27 mpg highway, and 21 mpg combined, placing it as a measured sporty choice rather than an efficiency leader. Its reliability profile is relatively contained, with 18 total owner complaints logged and the power train emerging as the dominant concern area, alongside a single recall on record. For researchers, that modest footprint provides a useful baseline against which later TT model years can be benchmarked.

Model year201220112010200920062005200420032002

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 / 10W-30 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 45 · N/A CCA battery, OE oil filter 06A115561B. Note the factory front wiper blades and serpentine belt are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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 45 · N/A CCAOEM · verified
Tail / brake / turnTURNOEM · verified
Tire size180 HP: 205-55WR16; 225 HP: 225-45ZR17OEM · verified

OE service part numbers OEM · verified

Engine oil filter06A115561B
Engine air filter1J0129620
Fuel filter1J0201511A
Spark plug101000063AA
Battery000915105AD alt 8N7915105A
Front wiper blades3A1955425 discontinued · alt 8D1955425A
Serpentine belt06A260849C discontinued
Thermostat050121113C alt 038121119B
Cabin air filter1J0819644A

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S6)

Ratings & economy EPA / vPIC

EPA city / highway / combined18 / 27 / 21 mpg
DrivetrainFront-Wheel Drive
Recommended fuelPremium Gasoline

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 / 10W-30 API engine oil, DOT 4 brake fluid. Torque lug nuts to 89 ft-lbs, the oil drain plug to 22.0 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Automatic Transmission FluidAudi part number G055025A2
Automatic Transmission Fluid Capacity7.4
Brake FluidDOT 4
Differential Gear Oil Capacity3.2 Pints
Differential Gear Oil Capacity3.8 Pints
Engine Oil Capacity4.8 qt
Power Steering FluidUSE AUDI PART NO. G002000 OR G004000

Engine torques

Camshaft Bearing/Carrier Cap Bolts or Studs7 ft-lbs
Intake Manifold to Engine Bolts7 ft-lbs
Exhaust Manifold to Cylinder Head Bolts18 ft-lbs
Engine Oil Pan Drain Plug22.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs12 ft-lbs
Engine Valve Cover Bolts7.2

Chassis torques

Lug Nuts89 ft-lbs
Transfer Case Fill Plug11.0 ft-lbs
Transfer Case Drain PlugBevel box: 44.0, Haldex Clutch: 22.0 ft-lbs
Rear Wheel Hub129 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)AWD: 780, FWD MT: 860, FWD AT: 700 rpm
Curb Idle Speed Variance (No Load)60 rpm
Ignition Coil Primary Resistance0.4-0.6 ohms
Ignition Coil Secondary Resistance9000-14,000 ohms
Spark Plug ManufacturerAudi/VW
Spark Plug Gap0.032 in
Spark Plug Torque22 ft-lbs

Battery & A/C

RefrigerantR134a
Oil GroupPAG
Standard BCI Group Number45

Service checks

Pressure Test14.5 psi
Radiator Cap Pressure Relief20-23 psi
Thermostat Opening Temperature188 °F
Regulated Fuel System Pressure (Without Vacuum)42.0 psi
Regulated Fuel System Pressure (With Vacuum)36.0 psi
Residual Pressure21 psi
Engine Compression131-209 psi
Intake Valve LashHydraulic in

Brakes

Torque Caliper to Bracket18 ft-lbs / 92 ft-lbs / 26 ft-lbs
Torque to Knuckle92 ft-lbs / 89 ft-lbs / 48 ft-lbs
Rotor Nominal Thickness From1.26 in / 0.984 in / 0.354 in / 0.866 in
Rotor Nominal Thickness To1.26 in / 0.984 in / 0.354 in / 0.866 in
Rotor Discard at or Under1.181 in / 0.906 in / 0.276 in / 0.787 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
122 ft. lbs., Step 2: 9022 ft. lbs
Flex or Driveplate Bolts — tightening sequence 1 stages
144 ft. lbs., Step 2: 9044 ft. lbs
Engine Flywheel Bolts — tightening sequence 1 stages
144 ft. lbs., Step 2: 18044 ft. lbs
Main Bearings — tightening sequence 1 stages
148 ft. lbs., Step 2: 9048 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 40,000 mi.

Every 10,000 miBattery (inspect electrolyte level) · Brake Shift Interlock Solenoid (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Door Stop (lubricate) · Engine Coolant System (inspect fluid level)
Every 20,000 miCabin Air Filter (replace) · Engine Assembly (leak inspection) · Final Drive (leak inspection) · Headlamp (inspect alignment) · Suspension Ball Joint (inspect) · Transfer Case Assembly (drain & refill)
Every 40,000 miEngine Air Filter Element (replace) · Power Steering System (inspect fluid level) · Spark Plugs (replace) · Sunroof Assembly (lubricate)
At 105,000 miAccessory Drive Belt (inspect) · Timing 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 2003 Audi TT/TTS Coupe/Roadster lead in one area — the power train, 4 of 18 reports (22%), well ahead of the next concern. None of this vehicle's 1 recall campaigns target the power train, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the power train 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.

1
Open recalls
NHTSA campaigns
115
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
18
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 18 complaints on record, top 8 components.

Power Train4
Electrical System3
Engine & Engine Cooling3
Electrical System,Exterior Lighting,Visibility/Wiper1
Power Train,Electrical System1
Fuel System, Gasoline,Electrical System1
Engine & Engine Cooling,Electrical System1
Engine & Engine Cooling,Power Train1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

14E007000Engine And Engine Cooling:EngineReported 07/03/2014

The Gates Corporation (Gates) is recalling certain aftermarket Tru-Flow Water Pumps, part number TFW 41127, sold at certain NAPA Auto Parts and/or installed by automotive service technicians after November 1, 2013 (and… Remedy: Gates will notify owners, and dealers will replace the water pump, free of charge. The recall began during May 2014. Owners may contact The Gates Corporation at 1-303-744-1911.

Technical service bulletins NHTSA · verified

Showing 5 of 115 bulletins on record with NHTSA.

BulletinDateComponentSummary
A0023742052680_42023-10-04EquipmentThis bulletin provides information on the additional reporting requirements for safety…
SM 48-20222022-06-15EquipmentThis special notice is to inform dealers to return the parts listed if it meets the…
SM 32-20222022-04-05EquipmentThis special notice is to inform dealers to return the parts listed if it meets the…
A0021482021205_62021-06-25StructureThis informational bulletin explains how to order replacement VIN plates, Safety…
A3720992060148_12020-07-13Power TrainThis informational bulletin states to not replace parts for the beveling groove as it is…

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 TT/TTS Coupe/Roadster. 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 45 batteryVehicles taking 4.8 qtEngine oil filter 06A115561BEngine air filter 1J0129620Fuel filter 1J0201511ASpark plug 101000063AA

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

How much oil does the 2003 TT/TTS Coupe/Roadster take?

4.8 qt of ENERGY CONSERVING OILS: 5W-30, 5W-40, 10W-30 OR 10W-40 API SL, EXCEPT ENGERGY CONSERVING OILS: 5W-50, 10W-50, OR 10W-60 API SL, per the factory manual.

Does the 2003 TT/TTS Coupe/Roadster have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the TT/TTS Coupe/Roadster get?

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