Audi 107ci Specs: 81 x 86.4 mm

Audi 107ci specs: 81 x 86.4 mm (3.1890 x 3.4016 in) bore and stroke, shared by all 3 versions. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	107 ci
Cylinders	4
Bore	3.189"
Stroke	3.402"
Compression	9.0–9.5:1
Advertised power	150–180 hp
Years	1997–2006

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
AEB / ATW / AWM	107 ci	3.189" × 3.4016"	9.5:1	150
Audi 107ci (2000–2006)	107 ci	3.189" × 3.4016"	9.5:1	180
AMU / BEA	107 ci	3.189" × 3.4016"	9:1	—

Factory cars with a Audi 107ci

• Audi A4 / S4: 1997, AEB / ATW / AWM, 150 hp; 1998, AEB / ATW / AWM, 150 hp; 1999, AEB / ATW / AWM, 150 hp; 2000, AEB / ATW / AWM, 150 hp; 2001, AEB / ATW / AWM
• Audi TT: 2000, 180 hp; 2001, AMU / BEA; 2001, 180 hp; 2002, AMU / BEA; 2002, 180 hp; 2003, AMU / BEA; 2003, 180 hp; 2004, AMU / BEA; 2004, 180 hp; 2005, AMU / BEA; 2005, 180 hp; 2006, AMU / BEA; 2006, 180 hp

What varies across the family

All are undersquare — stroke larger than bore, favouring torque low in the range.

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

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