Audi Audi TT 1998-2006

Audi Audi TT 1998-2006 Drivetrain Specifications

Detailed technical specifications and documentation for the drivetrain system of the 1998-2006 Audi TT. Includes transmission, differential, driveshaft, axles, and quattro system details.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 1998-2006 Audi TT, including key features, measurements, and technical details. This manual covers front-wheel drive (FWD) and quattro all-wheel drive (AWD) configurations, transmission types, and differential systems.

How to Use

Use the search function to locate specific drivetrain components or specifications by entering keywords such as 'transmission type', 'differential ratio', or 'driveshaft torque'.

Navigate through the drivetrain documentation by selecting the relevant section from the table of contents. Each section is organized by major drivetrain components and their respective subsections.

Key Specifications

Transmission Type

5-speed manual / 5-speed automatic

Final Drive Ratio

4.235 (FWD) / 4.111 (AWD)

Maximum Torque Capacity

350 Nm (258 lb-ft)

Clutch Disc Diameter

240 mm (9.45 in)

Driveshaft Length

1,250 mm (49.2 in)

Available Specifications

Transmission System

Details about the manual and automatic transmission options available for the 1998-2006 Audi TT, including gear ratios, torque capacity, and technical specifications.

Manual Transmission (MQ350)

5-speed manual transmission with synchronized gears
Gear ratios: 1st (3.778), 2nd (2.118), 3rd (1.360), 4th (0.971), 5th (0.756)
Reverse gear ratio: 3.600
Maximum torque capacity: 350 Nm (258 lb-ft)
Final drive ratio: 4.235

Automatic Transmission (Tiptronic)

5-speed automatic transmission with manual shift mode
Gear ratios: 1st (3.665), 2nd (2.050), 3rd (1.370), 4th (1.000), 5th (0.839)
Reverse gear ratio: 3.403
Maximum torque capacity: 310 Nm (229 lb-ft)
Final drive ratio: 4.111

Note: The Tiptronic transmission includes a torque converter for smooth shifting and improved drivability.

Differential System

Technical details about the differential systems used in the Audi TT, including the front differential for FWD models and the rear differential for quattro AWD models.

Front Differential (FWD Models)

Open differential with electronic differential lock (EDL)
Differential ratio: 4.235
Maximum torque distribution: 100% to the front wheels
EDL operates up to 25 km/h (15.5 mph)
Integrated into the transmission housing

Rear Differential (quattro AWD Models)

Torsen T-2 limited-slip differential
Differential ratio: 4.111
Torque split: 50:50 front-to-rear under normal conditions
Dynamic torque distribution based on traction conditions
Integrated with the rear axle drive

Note: The Torsen differential provides superior traction and stability in all driving conditions.

Driveshaft and Axles

Specifications for the driveshaft and axle components, including material, dimensions, and torque ratings.

Driveshaft

Material: High-strength steel with anti-corrosion coating
Length: 1,250 mm (49.2 in)
Maximum torque capacity: 350 Nm (258 lb-ft)
Equipped with CV joints for smooth power delivery
Balanced for high-speed operation

Front Axles

Material: Forged steel with heat treatment
Diameter: 28 mm (1.1 in)
Maximum torque capacity: 350 Nm (258 lb-ft)
Equipped with constant velocity (CV) joints
Integrated with wheel hubs for direct power transfer

Note: The CV joints are maintenance-free and sealed for life.

Clutch System

Technical details about the clutch system, including clutch type, diameter, and torque capacity.

Clutch Assembly

Single-disc dry clutch with diaphragm spring
Clutch disc diameter: 240 mm (9.45 in)
Maximum torque capacity: 350 Nm (258 lb-ft)
Hydraulic clutch actuation system
Self-adjusting clutch mechanism

Clutch Pedal

Pedal travel: 150 mm (5.9 in)
Pedal force: 120 N (27 lb)
Integrated with the brake pedal assembly
Equipped with a clutch position sensor
Designed for smooth and precise engagement

Note: The hydraulic system ensures consistent clutch performance over time.

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Component Specifications

Transmission

Type: 5-speed manual / 6-speed manual / 6-speed Tiptronic automatic

Gear Ratios: 1st: 3.50:1
2nd: 2.11:1
3rd: 1.43:1
4th: 1.03:1
5th: 0.84:1
6th: 0.68:1 (manual), 0.73:1 (Tiptronic)
Reverse: 3.67:1

Final Drive Ratio: 4.24:1 (FWD), 3.21:1 (Quattro)

Fluid Capacity: 2.6 liters (manual), 7.5 liters (Tiptronic)

Fluid Type: G 052 911 A2 (manual), G 052 162 A2 (Tiptronic)

Part Number: 01J 300 043 (Tiptronic), 02J 300 041 (manual)

Clutch

Type: Single dry plate diaphragm spring

Diameter: 228 mm

Torque Capacity: 240 Nm

Part Number: 06B 141 025

Wear Limit: 1.5 mm

Differential

Type: Open (FWD) / Torsen (Quattro)

Ratio: 4.24:1 (FWD), 3.21:1 (Quattro)

Fluid Capacity: 1.2 liters

Fluid Type: G 052 145 S2

Part Number: 02J 409 031 (FWD), 02J 409 032 (Quattro)

Axles

Front Axle: Type: Independent, MacPherson strut
Cv Joint Type: Tripod
Part Number: 8N0 498 101
Torque Spec: 60 Nm

Rear Axle: Type: Independent, double wishbone (Quattro only)
Cv Joint Type: Ball and cage
Part Number: 8N0 498 102
Torque Spec: 70 Nm

Driveshafts

Front: Length: 620 mm
Diameter: 32 mm
Part Number: 8N0 407 271
Torque Spec: 40 Nm

Rear: Length: 540 mm (Quattro only)
Diameter: 28 mm
Part Number: 8N0 407 272
Torque Spec: 45 Nm

Transfer Case

Type: Torsen center differential (Quattro only)

Ratio: 1:1

Fluid Capacity: 0.9 liters

Fluid Type: G 052 145 S2

Part Number: 02J 409 033

Propeller Shaft

Type: Two-piece with center support bearing (Quattro only)

Length: 1200 mm

Diameter: 60 mm

Part Number: 8N0 521 101

Torque Spec: 80 Nm

Wheel Bearings

Front: Type: Sealed roller bearing
Part Number: 8N0 498 625
Torque Spec: 200 Nm

Rear: Type: Sealed roller bearing
Part Number: 8N0 498 626
Torque Spec: 180 Nm

Operational Limits

Max Torque: 280 Nm

Max Speed: 250 km/h (electronically limited)

Temperature Range: -40°C to 120°C

Fluid Pressure: 2.5 bar (Tiptronic)

Diagnostics

Fault Codes

P0730 - Incorrect gear ratio
P0700 - Transmission control system malfunction
P1701 - Transmission range sensor circuit

Diagnostic Tool: VAG-COM / VCDS

Test Procedures

Check fluid level and condition
Inspect for leaks
Perform road test for shift quality

Service Information Service

Detailed service requirements and schedules for the drivetrain system

30,000

Inspect transmission fluid level
Check differential fluid level
Inspect driveshaft boots for damage

Replace fluids if contamination is detected

60,000

Replace transmission fluid (Tiptronic only)
Replace differential fluid
Inspect clutch wear (manual only)

Use only Audi-approved fluids

100,000

Replace transfer case fluid (Quattro only)
Inspect propeller shaft center support bearing
Check wheel bearing play

Perform torque checks on all drivetrain components

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of drivetrain does the 1998-2006 Audi TT use?

The 1998-2006 Audi TT is available with either front-wheel drive (FWD) or quattro all-wheel drive (AWD) systems. The FWD models use a transaxle layout, while the quattro system employs a Torsen T-2 differential for torque distribution between the front and rear axles.

What is the torque split in the quattro AWD system?

The quattro AWD system in the Audi TT uses a Torsen T-2 differential, which provides a default torque split of 50:50 between the front and rear axles. Under varying conditions, the system can dynamically adjust the torque distribution up to 70:30 or 30:70, depending on traction needs.

What type of transmission is used in the Audi TT?

The 1998-2006 Audi TT is equipped with either a 5-speed manual transmission, a 6-speed manual transmission, or a 6-speed dual-clutch automatic transmission (DSG), depending on the model and trim. The DSG transmission is known for its quick shift times and smooth operation.

What is the recommended service interval for the drivetrain components?

Audi recommends inspecting the drivetrain components, including the transmission, differential, and driveshafts, every 40,000 miles or 4 years, whichever comes first. The transmission fluid should be replaced every 60,000 miles for manual transmissions and every 40,000 miles for DSG transmissions.

What is the maximum torque capacity of the drivetrain?

The drivetrain in the 1998-2006 Audi TT is designed to handle up to 258 lb-ft of torque, which is the maximum output of the 3.2L VR6 engine used in the TT 3.2 quattro models. Exceeding this torque limit may cause premature wear or failure of drivetrain components.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Audi TT Drivetrain Service Manual

Coming Soon

Official service manual for the 1998-2006 Audi TT drivetrain, including detailed procedures for maintenance, repair, and troubleshooting.

Quattro AWD System Overview

Coming Soon

Technical overview of the quattro all-wheel drive system used in the Audi TT, including its operation, benefits, and maintenance tips.

DSG Transmission Maintenance Guide

Coming Soon

Comprehensive guide to maintaining and servicing the 6-speed DSG transmission in the Audi TT, including fluid change intervals and common issues.

Drivetrain Torque Specifications

Coming Soon

Detailed torque specifications for all drivetrain components in the 1998-2006 Audi TT, including bolts, nuts, and fasteners.

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