Audi A4 Maintenance Plans

The Audi A4 spans multiple generations from 1995-2025 with a wide spread of engines and fuel types, so maintenance needs can vary by model year and powertrain. Use the selector for your exact A4 range and engine to see the correct service operations and intervals.

Select your Audi model below to view the online service schedule for your specific engine.

5 models covered

Model Year Range Engines covered Fuel
A4 1995-2002 1995-2002 1.6 Petrol (ADP), 1.6 Petrol (AHL), 1.6 Petrol (ALZ), 1.6 Petrol (ANA), 1.8 20V Petrol (ADR), 1.8 20V Petrol (AFY), 1.8 20V Petrol (APT), 1.8 20V Petrol (ARG), 1.8 20V Petrol (AVV), 1.8 20V Turbo Petrol (AEB), 1.8 20V Turbo Petrol (AJL), 1.8 20V Turbo Petrol (ANB), 1.8 20V Turbo… Diesel, Petrol
A4 2001-2005 2001-2005 1.6 8V Petrol (ALZ), 1.8 20V Turbo Petrol (AMB), 1.8 20V Turbo Petrol (AVJ), 1.8 20V Turbo Petrol (BEX), 1.8 20V Turbo, -Cabriolet Petrol (BFB), 1.9 TDI Diesel (AVB), 1.9 TDI Diesel (AVF), 1.9 TDI Diesel (AWX), 1.9 TDI Diesel (BKE), 2.0 20V, -Cabriolet Petrol (ALT), 2.0 FSi Petr… Diesel, Petrol
A4 2005-2009 2005-2009 1.6 8V Petrol (ALZ), 1.8 20V Turbo, -Cabriolet Petrol (BFB), 1.9 TDI Diesel (BKE), 1.9 TDI DPF Diesel (BRB), 2.0 20V Petrol (ALT), 2.0 TDI 8V DPF Cabriolet Diesel (BRC), 2.0 TDI 8V DPF, -Cabriolet Diesel (BPW), 2.0 TDI Diesel (BLB), 2.0 TDI Diesel (BNA), 2.0 TDI Diesel (BVG), 2.… Diesel, Petrol
A4 2007-2015 2007-2015 1.8 TFSI Petrol (CABA), 1.8 TFSI Petrol (CABB), 1.8 TFSI Petrol (CDHA), 1.8 TFSI Petrol (CDHB), 1.8 TFSI Petrol (CJEB), 2.0 TDI Diesel (CAGA), 2.0 TDI Diesel (CAGB), 2.0 TDI Diesel (CAGC), 2.0 TDI Diesel (CAHA), 2.0 TDI Diesel (CAHB), 2.0 TDI Diesel (CGLC), 2.0 TDI Diesel (CGLD)… Bioethanol (E85), Diesel, Petrol
A4 2016-2025 2016-2025 1.4 TFSI Petrol (CVNA), 2.0 G-tron CNG (CVLA), 2.0 TDI Diesel (DETA), 2.0 TDI Diesel (DETB), 2.0 TDI Diesel (DEUA), 2.0 TDI Diesel (DEUB), 2.0 TDI Diesel (DEUC), 2.0 TFSI MHEV 48V (MHEV),Petrol (DDWA), 2.0 TFSI MHEV 48V (MHEV),Petrol (DEMA), 2.0 TFSI Petrol (CVKB), 2.0 TFSI Petr… 48V (MHEV), CNG, Diesel, Petrol

Servicing by engine type

Audi A4 petrol servicing (TFSI and FSi)

Audi A4 petrol engines such as TFSI and FSi place a premium on clean oil and the correct service interval, particularly on turbocharged variants. Keep the routine oil and filter change consistent with the plan shown for your selected engine, and address any engine management light promptly to avoid catalyst damage. On higher-output models (including S4 and RS4 petrol variants), consumables and under-bonnet temperatures can make inspection items more important between services. If your A4 is used mostly for short trips, it is worth being stricter about checks for oil level/condition and any signs of intake or boost leaks.

Audi A4 diesel servicing (TDI)

Audi A4 diesel engines (TDI, including V6 TDI and later 48V (MHEV) diesel variants) benefit from a maintenance routine that matches how the car is driven, especially if it sees frequent stop-start use. Follow the correct oil specification and interval shown for your exact engine, as diesel servicing is sensitive to the right oil grade and quality. Pay attention to DPF and EGR-related symptoms (for example repeated warning lights or loss of power), as these are often linked to usage patterns and overdue checks. Regular visual inspections for leaks, hose condition and exhaust/DPF condition help prevent small issues becoming expensive faults.

Audi A4 48V (MHEV) servicing

Later Audi A4 models with 48V (MHEV) add mild-hybrid components alongside petrol (TFSI) or diesel (TDI) engines, so servicing needs to cover both conventional engine items and hybrid-related checks. The core schedule still centres on routine engine oil and filter changes, but access and safe-working steps can differ from non-hybrid A4s. If the vehicle reports charging or electrical system warnings, treat them as diagnostic priorities rather than “drive and see”, as the 48V system supports starting, charging and ancillary functions. Select your exact engine (for example 35/40/45 TFSI or 30/35/40 TDI MHEV) to ensure the plan matches the correct layout and equipment.

Audi A4 CNG servicing (G-tron)

Audi A4 CNG models (such as the G-tron) combine a spark-ignition engine with high-pressure gas storage and associated fuel hardware, so correct inspection routines matter. Keep to the planned service items and intervals for your specific CNG engine, as fuel system checks can be model-specific and should not be assumed from a standard petrol A4. If you notice hesitation, misfires or a persistent engine management light, have the system checked early because running faults can affect the catalytic converter. Use the selector to confirm the exact operations for your CNG-equipped A4 and the relevant engine family.

Audi A4 Bioethanol (E85) servicing

Audi A4 engines listed for Bioethanol (E85) may be more sensitive to fuel quality and storage, so consistent maintenance and prompt attention to running issues are important. Follow the correct oil service plan for your specific engine (for example TFSI variants that support E85) and do not mix assumptions from non-E85 petrol models. If the car is used infrequently, stale fuel effects can show up as hard starting or rough running, which should be diagnosed rather than ignored. Selecting your A4 year range and engine is the best way to confirm exactly what is due and when.

Common service operations for Audi

The operations listed below reflect typical Audi A4 scheduled maintenance, but the exact cadence and any additional items depend on the generation and engine you select. Always follow the plan shown for your specific A4, especially where a later engine technology changes what is inspected or replaced.

Operation Typical interval Notes
Oil and filter changeSee selector aboveVaries by engine and recommended oil grade
Air filter30,000 to 60,000 kmMore often in urban or dusty driving
Cabin filter15,000 to 30,000 km or 1 yearAffects air conditioning and air quality
Brake fluid2 years (all models)Regardless of mileage
CoolantPer manufacturer (typically 5 years or 100,000 km)Check level and condition (colour, deposits) at every service
Front brake padsDepending on use (typically 30,000 to 60,000 km)Wear depends on driving style and load carried
Timing beltSee selector aboveInterval varies widely by engine
Spark plugs (petrol)30,000 to 60,000 kmPetrol engines only

Audi electronic diagnostics

If your Audi A4 shows an engine management light or drivability issues, an OBD2 scan is usually the quickest way to narrow the fault down. Read the stored DTCs and use them to separate emissions-related problems (for example lambda sensor, catalytic converter, EGR or DPF faults) from ignition, fuel or boost-control issues, then confirm with basic checks before replacing parts. For a clearer next step, use the Audi A4 fault-code guide at /pages/fault-codes-obd-car-audi-a4.

What the Audi manual covers

A maintenance plan tells you what should be done and when, but the correct “how” matters just as much on an Audi A4 with many generations and engine options. A Haynes repair manual helps you carry out service jobs with model-specific procedures, tightening torques, capacities and step-by-step sequences. It also supports the extra detail that varies by engine family, such as component locations, access steps and service-safe working practices. Choose the manual that matches your A4 year range and engine for the most accurate guidance.

Audi manual