The 1.9 liter Volkswagen AAZ 1.9 TD diesel engine was produced from 1991 to 1998 and installed in many models of the group, but in Poland it is mainly known for popular Passats B3 and B4. It is these engines that have given German cars a reputation as durable and trouble-free vehicles. The EA086 series also includes the following engines: JK, JP, JX, SB, 1X, 1Y, and ABL.
| Exact capacity | 1896 cm³ |
| Power system | forklift chambers |
| Engine power | 75 HP |
| Torque | 140 - 150 nm |
| Engine block | cast iron R4 |
| Block head | aluminum 8v |
| Cylinder diameter | 79.5 mm |
| Piston stroke. | 95.5 mm |
| Compression ratio | 22.5 |
| Engine features | SOHC |
| Hydraulic compensator. | tak |
| Timing drive | strip |
| Timing phase adjuster | there is no |
| Turbocharging | tak |
| What oils to use | 4.3 liters 5W-30 |
| Fuel type | diesel |
| Environmental class | EURO 1/2 |
| Approximate life expectancy | 450 000 HP |
| City | 7.6 litry |
| Route | 4.7 litry |
| Mixed | 6.5 litry |
The weight of the AAZ engine assembly is 155 kg. The AAZ engine number is located on the cylinder block. This diesel engine is most afraid of overheating, and its cylinder head often cracks. The second most common issue is fuel leaks through the injection pump gaskets. The timing belt should be replaced every 60,000 km or in case of valve failure. After 200-250 thousand kilometers, the turbocharger often starts consuming lubricant excessively. The main disadvantage of such engines is their age; finding a functioning one on the used market is difficult.
| 80 B4 (8C) | 1991 - 1995 |
| Cordoba 1 (6K) | 1993 - 1997 |
| Ibiza 2 (6K) | 1993 - 1996 |
| Toledo 1 (1L) | 1991 - 1997 |
| Golf 3 (1H) | 1991 - 1997 |
| Vento 1 (1H) | 1992 - 1998 |
| Passat B3 (31) | 1991 - 1993 |
| Passat B4 (3A) | 1993 - 1997 |
The 1.9-liter diesel engine of the Volkswagen AHU 1.9 TDI was produced from 1996 to 2001 and installed in many popular vehicles of the company, but it is mainly associated with the Passat [B5]. This engine is essentially a slightly modernized version of the well-known diesel with the index [1Z]. The EA180 series also includes the following engines: AKU, 1Z, AFN, AHF, ALH, AEY, and AVG.
The 2.0-liter diesel engine Audi CAGA 2.0 TDI was produced by the company from 2007 to 2013 and installed in models of the German group, such as A4 B8, A5 8T, and the Q5 8R crossover. This diesel engine was quite popular in Russia and often encountered in the secondary market. EA189 Series: CAAC, CAYC, CAHA, CBAB, CFCA, CFHC, CKTB, CLCA, and CLJA.
2.0-liter Audi DETA or A4 B9 2.0 TDI diesel engine has been produced by the company since 2015 and installed in their popular models with a longitudinal engine layout. There is an equivalent diesel engine with the same power parameters and DESA index. EA288 series: CRLB, CRMB, DAUA, DBGC, DCXA, DFBA, and DFGA.
The 2.5-liter turbocharged diesel engine Audi BAU 2.5 TDI was produced by the company from 2003 to 2005 and belonged to the upgraded B series. In this engine, the timing system is equipped with special rollers. This engine was most commonly found under the hood of popular models such as the A4 B6 and A6 C5. The EA330 line also includes the following engines: AFB, AKE, AKN, AYM, BDG, and BDH.
The 1.8-liter 16-valve Jili JLY-4G18 or JL4G18-D engine has been produced since 2007 and is used in many models of the company, including the Emgrand ES7 sedan and the X7 crossover. This engine is practically a clone of the well-known Japanese Toyota 1ZZ-FE engine. The JLY family also includes the JLY-4G15 engine.
The 1.9-liter diesel engine Opel Z19DT or 1.9 CDTi was produced from 2004 to 2010 and installed in popular models of the German concern, such as Astra, Vectra, or Zafira. This 8-valve engine was created by Fiat and was installed in Saab under its own index D207E. The Z series also includes the following engines: Z13DTJ, Z13DTH, Z17DTH, and Z19DTH.