Audi TT (2007 year). Manual - part 222

21

The belt tensioner retracts the seat belt to the extent 
possible, and the inertia-reel seatbelt locks the seat 
belt retractor shaft. The seat belt can no longer be 
pulled out.
If the occupant's body now accelerates forwards 
due to centrifugal force, the belt force limiter allows 
the seat belt to unreel as of a certain force.Both 
torsion shafts are rotated.

After a defined period of time, the belt force limiter 
igniter is activated. The spline end decouples gear II 
from gear I. 
The belt force is now limited by the seat belt 
retractor shaft alone.The occupant can plunge into 
the fully inflated airbag.

380_011

Seat belt retractor shaft

Gear I

Torsion shaft II

Spline end

Gear II

380_010

Seat belt retractor shaft

Gear I

Torsion shaft II

Spline end

Gear II

380_016

Detonator

Spline end

Gear II

Gear I

Torsion shaft II

Seat belt

retractor shaft

22

Engine

Engine-gearbox combination

2.0l 4 cyl. TFSI

MQ 350 6F / DQ 250 6F 

MQ 350 6A / DQ 250 6A

3.2l VR6 MPI

380_042

380_044

380_045

380_060

380_045

380_060

Reference

For information about the design and 
function on the s-tronic, please refer 
to Self-Study Programme 386 
6-speed Direct Shift Gearbox 02E.

23

The engine number is located at the rear left of the 
engine block in the area of the gearbox flange.

Technical features

–

Toothed belt drive with CTC toothed belt 
sprocket

–

Selective petrol direct injection system (FSI)

–

Turbocharging

–

Pencil ignition coils

–

1 primary catalytic converter and 1 main catalytic 
converter

–

1 primary catalytic converter and 1 post-cat 
sensor

Specifications

Engine code

BWA

Type of engine

4-cylinder petrol engine 

Displacement

1984 cm

3

Power output

147 kW (200 bhp) at 5100 RPM

Torque

280 Nm at 1800 - 5000 RPM

Bore

82.5 mm

Stroke

92.8 mm

Compression ratio

10.5 : 1

Cylinder spacing

90 mm

Weight

approx. 152 kg 

Firing order

1 – 3 – 4 – 2 

Engine management

Bosch Motronic MED 9.1 

Exhaust gas recirculation

Internal exhaust gas recirculation

Exhaust emission control

1 ceramic pre-catalytic converter with heating function via homogeneous 
split dual injection, 1 main catalytic converter

Exhaust emission standard

EU 4 / ULEV

Torque/power curve

Max. torque in Nm

Max. power output in kW

Engine speed in RPM

2.0l TFSI

380_047

380_042

24

Technical features

–

Chain drive on the transmission side

–

Cylinder-selective injection system 

–

Fully variable adjustment of both camshafts

–

Pencil ignition coils

–

2 primary catalytic converters and 2 main 
catalytic converters

Engine

3.2l VR6 MPI

Specifications

Engine code

BUB

Type of engine

VR6 petrol engine 15° vee angle

Displacement

3,189 cm

3

Power output

184 kW (250 bhp) at 6,300 RPM

Torque

320 Nm from 2500 to 3000 RPM

Bore

84.0 mm

Stroke

95.9 mm

Compression ratio

11.3 : 1

Offset

15°

Firing order

1 – 5 – 3 – 6 – 2 – 4 

Engine management

Bosch ME 7.1.1 

Camshaft adjustment range

Intake camshaft 52° crank angle
Exhaust camshaft 42° crank angle

Exhaust gas recirculation

Internal exhaust gas recirculation

Exhaust emission control

2 primary catalytic converters and 2 main catalytic converters 

Exhaust emission standard

EU 4 

Torque/power curve

Max. torque in Nm

Max. power output in kW

Engine speed in RPM

380_046

380_044