Audi Aat engine

The 2.5-liter Audi AAT 2.5 TDI diesel engine was produced by the company from 1991 to 1997 and installed only in two models of the corporation: designated as 100 or the equivalent A6 in the C4 body. This five-cylinder powertrain is known for its high reliability and large capacity. The EA381 series also includes: , CN, AAS, AEL, BJK, and AHD.

Technical engine data Audi AAT 2.5 TDI.

Exact capacity2460 cm³
Power systemdirect injection
Engine power115 HP
Torque265 nm
Engine blockcast iron R5
Block headaluminum 10v
Cylinder diameter81 mm
Piston stroke.95.5 mm
Compression ratio20.5
Engine featuresSOHC, intercooler
Hydraulic compensator. tak
Timing drivebelt
Timing phase adjusterthere is no
What oils to use5.2 liters 5W-40
Fuel typediesel
Environmental classEURO 2
Approximate life expectancy550 000 HP

Fuel consumption Audi Aat engine

Using the example of the 1995 Audi A6 with a manual transmission:
City8.5 litry
Route5.4 litry
Mixed6.8 litry

Engine Overview and Common Failures

One of the most reliable diesel engines of its time rarely bothers its owners. The majority of problems are associated with malfunctions in the operation of the Bosch VE37 electronic fuel injection pump. The aluminum cylinder head is susceptible to overheating, which quickly damages the mating surfaces. Replacing the timing belt with rollers can be expensive, but a valve failure always causes compression loss. With high mileage, it may be necessary to replace the turbocharger, as well as the EGR valve and hydraulic lifters.

Engine Audi Aat

100 C4 (4A)1991 - 1994
A6 C4 (4A)1994 - 1997

Engines from the same line as Audi Aat engine

See Also

Audi Avg engine

The 1.9-liter diesel engine Audi AVG 1.9 TDI was produced by the company from 1999 to 2001 and installed in many models of this manufacturer, but the most well-known were A4 [B5] and A6 C5. This power unit is actually a slightly improved version of the diesel engine with the index AFN. The EA180 series also includes the following engines: AKU, 1Z, AFN, AHF, AHU, ALH, and AEY.

VW Cayc engine

The 1.6-liter Volkswagen CAYC 1.6 TDI diesel engine was produced from 2009 to 2015 and installed in popular models of the company such as Golf 6, Passat B7, and fifth-generation Polo. This power unit is commonly found in Europe and is often available in the secondary market as well. EA189 series: CAAC, CAGA, CAHA, CBAB, CFCA, CFHC, CKTB, CLCA, and CLJA.

VW AK engine

The 2.5-liter Volkswagen AKN 2.5 TDI diesel engine was produced from 1999 to 2003 and installed in the popular Passat [B5] (/engines/mazda/engine/B5) model, as well as in Audi models such as the A4 [B5] (/engines/mazda/engine/B5), A6 C5, and A8 D2. This engine is basically a modernized version of the well-known [AFB] (/engines/audi/engine/AFB) engine compatible with EURO 3 emission standards. The EA330 line also includes engines: [AFB] (/engines/audi/engine/AFB), [AKE] (/engines/audi/engine/AKE), [AYM] (/engines/audi/engine/AYM), [BAU] (/engines/audi/engine/BAU), [BDG] (/engines/audi/engine/BDG), and [BDH] (/engines/vw/engine/BDH).

Audi engine Bau

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.

Lifan Lfb479q Engine

The 1.8-liter Lifan LFB479Q engine has been produced in China since 2011 and is installed in popular models of the company such as Solano, Murman, Maivey, and crossover H60. This power unit was developed by Ricardo based on the well-known Toyota 1ZZ-FE engine. Lifan models also use engines with the following designations: LF479Q2, LF479Q3, LF481Q3, and LF483Q.

Mazda F8 Engine

The 1.8-liter Mazda F8 engine was produced at the company's Japanese factory from 1982 to 2005 in several versions: with carburetor and fuel injection, as well as with 8-, 12-, and 16-valve head. This engine is known in our market as the 626 model in the GC-GD body or as the Bongo minibus. F Engine: F6, FP, FP-DE, FE, FE-DE, FE3N, FS, FS-DE, FS-ZE, and F2.