ETKA – Engine identification letters
1st Column = Engine identification letters
| Engine identification letters | kW | HP | Litre | Cylinder | When installed | Model | Remarks |
| BRB | 85 | 116 | 1,9 | 4 | 01/06-06/08 | Audi A4 | TDI |
| BRB | 85 | 116 | 1,9 | 4 | 05/07-06/08 | Audi A4 Avant 1,9 | TDI |
| BRB | 85 | 116 | 1,9 | 4 | 05/07-06/08 | Audi A4 1.9 Tdi E | TDI |
| BRC | 100 | 136 | 2 | 4 | 01/06-03/09 | Audi A4 | B.. |
| BRD | 125 | 170 | 2 | 4 | 06/06-06/08 | Audi A4 | TDI |
| BRE | 103 | 140 | 2 | 4 | 10/05-06/08 | Audi A4 | |
| BRE | 103 | 140 | 2 | 4 | 09/05-10/08 | Audi A6 | TDI |
| BRE | 103 | 140 | 2 | 4 | 09/05-10/08 | Audi A6 Avant 2 Tdi | TDI |
| BRF | 100 | 136 | 2 | 4 | 11/05-06/08 | Audi A4 | |
| BRF | 100 | 136 | 2 | 4 | 09/05-10/08 | Audi A6 | TDI,”B..” |
| BRF | 100 | 136 | 2 | 4 | 09/05-10/08 | Audi A6 Avant 2 Tdi | TDI,”B..” |
| BRV | 353 | 480 | 4,2 | 8 | 04/04-09/04 | Audi RS6 | |
| BSB | 331 | 450 | 6 | 12 | 09/07- | Audi A8 | South Korea |
| BSB | 331 | 450 | 6 | 12 | 10/04- | A8L | South Korea |
| BSE | 75 | 102 | 1,6 | 4 | 06/05- | Audi A3 | |
| BSE | 75 | 102 | 1,6 | 4 | 09/08-05/10 | Audi A3 Convertible 1.6 | |
| BSF | 75 | 102 | 1,6 | 4 | 06/05- | Audi A3 | |
| BSG | 120 | 163 | 2,7 | 6 | 03/06-06/08 | Audi A4 | B..:TDI |
| BSG | 120 | 163 | 2,7 | 6 | 11/05-06/08 | Audi A4 | TDI |
| BSG | 120 | 163 | 2,7 | 6 | 01/05-10/08 | Audi A6 | B..,TDI |
| BSG | 120 | 163 | 2,7 | 6 | 06/05-10/08 | Audi A6 | TDI |
| BSM | 331 | 450 | 5,2 | 10 | 06/06- | Audi S8 | |
| BTE | 331 | 450 | 6 | 12 | 09/07- | Audi A8 | |
| BTE | 331 | 450 | 6 | 12 | 06/05-10/07 | Audi A8 | Canada |
| BTE | 331 | 450 | 6 | 12 | 02/05-10/07 | A8L | Canada |
| BTE | 331 | 450 | 6 | 12 | 08/05-10/07 | A8L | Canada, South Corea F4S |
| BTE | 331 | 450 | 6 | 12 | 09/07- | A8L | PR-F4S |
| BTR | 240 | 326 | 4,2 | 8 | 03/07-06/09 | Audi Q7 | TDI |
| BUB | 184 | 250 | 3,2 | 6 | 11/05-05/09 | Audi A3 | |
| BUB | 184 | 250 | 3,2 | 6 | 08/06-06/10 | Audi TT | |
| BUG | 171 | 232 | 3 | 6 | 03/06-11/07 | Audi Q7 | |
| BUG | 171 | 232 | 3 | 6 | 03/06-05/08 | Audi Q7 | TDI |
| BUH | 426 | 579 | 5 | 10 | 04/08- | Audi RS6 | Avant |
| BUH | 426 | 579 | 5 | 10 | 09/08- | Audi Rs6 Quattro 5 | |
| BUJ | 386 | 525 | 5,2 | 10 | 04/09- | Audi R8 | |
| BUL | 162 | 220 | 2 | 4 | 06/05-06/08 | Audi A4 | |
| BUN | 155 | 211 | 3 | 6 | 03/06-11/07 | Audi Q7 | Belgium |
| BUY | 120 | 163 | 2 | 4 | 06/06-05/07 | Audi A3 | |
| BUY | 120 | 163 | 2 | 4 | 06/07-06/08 | Audi A3 | B..,”F..” |
| BVA | 120 | 163 | 2 | 4 | 06/06-06/08 | Audi A4 | B..:TDI |
| BVF | 93 | 126 | 2 | 4 | 11/05-11/06 | Audi A4 | TDI |
| BVG | 89 | 121 | 2 | 4 | 01/06-09/06 | Audi A4 | France TDI |
| BVG | 89 | 121 | 2 | 4 | 09/05-06/06 | Audi A6 | France TDI |
| BVG | 89 | 121 | 2 | 4 | 09/05-06/06 | Audi A6 Avant 2 TDI | France TDI |
| BVJ | 257 | 349 | 4,2 | 8 | 05/06- | Audi A6 | |
| BVJ | 257 | 349 | 4,2 | 8 | 06/06-10/08 | Audi A6 | ROK |
| BVJ | 257 | 349 | 4,2 | 8 | 06/06- | Audi A6 | PR-F4S |
| BVJ | 257 | 349 | 4,2 | 8 | 06/06- | Audi A8 | |
| BVJ | 257 | 349 | 4,2 | 8 | 06/06- | A8L | |
| BVN | 240 | 326 | 4,2 | 8 | 09/07- | Audi A8 | |
| BVN | 240 | 326 | 4,2 | 8 | 07/05-10/07 | Audi A8 | TDI |
| BVN | 240 | 326 | 4,2 | 8 | 07/05- | A8L | |
| BVP | 120 | 163 | 1,8 | 4 | 09/05-06/06 | Audi TT | |
| BVR | 140 | 190 | 1,8 | 4 | 09/05-06/06 | Audi TT | |
| BVY | 110 | 150 | 2 | 4 | 11/05-01/07 | Audi A3 | FSI |
| BVZ | 110 | 150 | 2 | 4 | 06/07-06/08 | Audi A3 | |
| BVZ | 110 | 150 | 2 | 4 | 11/05-05/07 | Audi A3 | FSI |
| BVZ | 110 | 150 | 2 | 4 | 06/07-06/08 | Audi A3 2 Fsi | |
| BWA | 147 | 200 | 2 | 4 | 06/07-06/08 | Audi | |
| BWA | 147 | 200 | 2 | 4 | 09/05-06/08 | Audi A3 | |
| BWA | 147 | 200 | 2 | 4 | 08/06-06/10 | Audi TT | |
| BWA | 147 | 200 | 2 | 4 | 06/07-05/09 | A3 | |
| BWE | 147 | 200 | 2 | 4 | 09/05-03/09 | Audi A4 | |
| BWT | 147 | 200 | 2 | 4 | 06/06-03/09 | Audi A4 | ROK |
| BXA | 320 | 435 | 5,2 | 10 | 06/06- | Audi S6 | |
| BXA | 320 | 435 | 5,2 | 10 | 08/06-10/08 | Audi S6 | ROK |
| BXE | 77 | 105 | 1,9 | 4 | 06/07-05/10 | Audi A3 | |
| BXE | 77 | 105 | 1,9 | 4 | 06/06-05/07 | Audi A3 | TDI |
| BYH | 309 | 420 | 4,2 | 8 | 04/07-09/10 | Audi R8 | |
| BYK | 125 | 170 | 2 | 4 | 10/06-06/08 | Audi A4 | ROK |
| BYK | 125 | 170 | 2 | 4 | 01/07- | Audi A6 | South Korea |
| BYT | 118 | 160 | 1,8 | 4 | 01/07-05/07 | Audi A3 | |
| BYT | 118 | 160 | 1,8 | 4 | 06/07-06/07 | Audi A3 Sportback | |
| BYT | 118 | 160 | 1,8 | 4 | 06/07-06/07 | Audi A3 1,8 TFSI | |
| BYU | 183 | 249 | 3,2 | 6 | 09/06-10/08 | Audi A6 | GUS |
| BZB | 118 | 160 | 1,8 | 4 | 04/08-01/09 | Audi A3 Convertible 1.8 | |
| BZB | 118 | 160 | 1,8 | 4 | 06/07-06/08 | Audi A3 Sportback | |
| BZB | 118 | 160 | 1,8 | 4 | 06/07-06/08 | Audi A3 1,8 Tfsi | |
| BZC | 188 | 256 | 2 | 4 | 02/07-06/08 | Audi S3 |