What is TFSI? Engine performance characteristics

What is TFSI? Engine performance characteristics

TFSI (Turbo fuel stratified injection) is a trade name that belongs to the Volkswagen Group. It is used for marking turbocharged engines with direct fuel injection system installed on Audi cars since 2004. This name is also used for some versions of 2 litre engines used on SEAT, Škoda, and ‎Volkswagen cars.

Features of TFSI engines

Most of the TFSI engines are 4 cylinder power units with 8 or 16 valves. Versions with 6 cylinders and 24 valves are much rarer. The engine block is usually made of aluminium, however it can also be made of cast iron. The engines are equipped with a turbocharger, often a variable geometry one. Twin-turbo versions are also popular. The valve timing system is usually chain- or belt-driven. However, there are also combined versions of the timing mechanism, which use a chain and a belt at the same time.

Popular TFSI engines

Series Engine capacity, l Version code Number and arrangement of cylinders Number of valves Max. output, hp Max. torque, N⋅m Production start Car models equipped with this type of engine
EA113 2.0 AXX inline-four 16 200 280 2004 Audi A3 8P; Volkswagen Golf 5; Volkswagen Passat B6
EA111 1.2 CBZB inline-four 8 105 175 2009 Audi A3 8P
1.4 CAXA inline-four 16 122 200 2006 Audi A1 8X
EA211 1.2 CJZA inline-four 16 105 175 2012 Audi A3 8V
1.4 CXSA inline-four 16 122 200 2013 Audi A3 8V
1.4 CZEA inline-four 16 150 250 2014 Audi Q2 GA; Audi A3 8V; Audi A1 8X; Audi Q3 8U
1.5 DADA inline-four 16 150 250 2017 Audi A1 GB; Audi Q2 GA; Audi A3 8V; Audi Q3 F3
EA839 3.0 CWGD V6 24 354 500 2016 Audi S4 B9; Audi S5 F5; Audi SQ5 FY
3.0 CZSE V6 24 340 500 2017 Audi A8 D5; Audi Q8 F1
EA888 1.8 CABA inline-four 16 120 230 2008 Audi A4 B8
CCTA inline-four 16 200 280 2008 Audi A3 8P; Audi TT 8J; Audi Q3 8U
CDAA inline-four 16 160 250 2008 Audi A3 8P; Audi A TT 8J
CDNB inline-four 16 180 320 2008 Audi A4 B8; Audi A6 C7; Audi A5 8T; Audi Q5 8R
2.0 CYRB inline-four 16 250 370 2015 Audi A5 F5; Audi A4 B9; Audi Q7 4M; Audi A4 allroad B9

Common malfunctions of TFSI engines

Malfunctions Engines
The intake valves and turbine blades quickly build up carbon deposits.AXX; CAXA; CJZA; CDAA; CCTA; CDNB; CABA
Ignition coils have a short lifespan.AXX; CDNB; CDAA; CABA
The cam phaser breaks down rather early.AXX
The timing belt or chain wears out relatively quickly.AXX; CBZB; CAXA; CYRB; CCTA; CDAA; CDNB; CABA
Engine vibrates excessively when idling.CBZB
The electric actuator responsible for changing the turbine blades angle breaks down often.CAXA; CJZA; CXSA; CZEA; CBZB
The pistons can crack due to the use of poor-quality fuel.CAXA
Oil consumption increases significantly due to sticking of the piston rings or clogging of the crankcase ventilation system.CXSA; CZEA; CDAA; CDNB; CYRB; CCTA
The camshafts wear out unevenly.CZEA
The high-pressure fuel pump often starts leaking.CDAA

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