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2021 Audi Q5 PHEV

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 Q5 PHEV.

Transmission Automatic (AM-S7)

The 2021 Audi Q5 PHEV pairs a plug‑in hybrid powertrain with a seven‑speed automatic (AM‑S7) transmission. It requires 5.4 quarts of 0W‑20 oil and returns EPA estimates of 23 city, 28 highway and 25 combined mpg. Owner reports tally 69 complaints, the majority centered on the electrical system, and the model has been subject to eight recalls. Those figures place the 2021 year as a relatively complaint‑heavy entry in the Q5 PHEV’s short history, suggesting buyers should weigh the electrical‑system track record when evaluating long‑term dependability.

Model year202520242023202220212020

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5.4 qtOEM · verified
Engine oil type0W-20OEM · verified
Lug nut torque103 ft-lbsOEM · verified
EPA fuel economy23/28/25 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI Refer to the appropriate service information for options and battery usage. battery, OE oil filter 06L115562B. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI Refer to the appropriate service information for options and battery usage.OEM · verified
Tire size235/55R19 101HOEM · verified
Wheel / rim8 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter06L115562B
Engine air filter8W0133843C
Spark plug06K905601L
Battery000915089BC
Front wiper blades80B998002
Cabin air filter4M0819439C

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (AM-S7)

Dimensions & weight NHTSA vPIC

Overall length184.3 in
Overall width74.4 in
Overall height65.4 in
Wheelbase111 in
Curb weight4045 lb
Track (front / rear)63.8 / 63.4 in
Weight distribution (front / rear)53/47

Ratings & economy EPA / vPIC

EPA city / highway / combined23 / 28 / 25 mpg
DrivetrainAll-Wheel Drive
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5.4 qt of 0W-20 engine oil, Audi P/N G 060 190 A2 in the differential, DOT 4 brake fluid. Torque lug nuts to 103 ft-lbs, the oil drain plug to Use new seal: 22.0 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Brake FluidDOT 4
Clutch FluidDOT 4
Differential Gear OilAudi P/N G 060 190 A2
Engine CoolantAudi Coolant G13-TL-VW774J
Engine Coolant Capacity10.5 qt
Engine Oil0W-20 · Synthetic
Engine Oil Capacity5.4 qt

Engine torques

Cylinder Head InstructionsOnly use new bolts.
Engine Oil Pan Drain PlugUse new seal: 22.0 ft-lbs

Chassis torques

Differential Fill PlugFinal Drive: 12.0 ft-lbs
Differential drain PlugFinal Drive: 12.0 ft-lbs
Lug Nuts103 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2

Brakes

ABS Sensor Torque6.4
Minimum Pad Thickness0.079" in
Vented Rotor Minimum Thickness for ReplacementFront: 1LC; Rear: 1KD

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1110.0 ft. lbs., Step 2: 150.0 ft. lbs., Step 3: 90°110 ft. lbs
Cylinder Head — tightening sequence 1 stages
1Bolts with Collar37 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 10,000 mi; spark plugs every 40,000 mi.

Every 10,000 miBrake Linings (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire Repair Kit Sealant (inspect)
Every 20,000 miBody Water Drains (inspect) · Brake Line (inspect) · Cabin Air Filter (replace) · Door Hinge (lubricate) · Drive Axle Assembly (inspect) · Engine Assembly (leak inspection)
Every 40,000 miSpark Plugs (replace) · Transmission Assembly (drain & refill)
Every 60,000 miDrive Belt (replace) · Engine Air Filter Element (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2021 Audi Q5 PHEV shows a significantly higher volume of reported issues compared to the 2024 model, with 69 complaints and 8 recalls versus 13 complaints and 0 recalls for 2024. This downward trend in issues is further evidenced by the 1,149 TSBs and one investigation associated with the 2021 model, compared to 686 TSBs and zero investigations for 2024. For the 2021 model year, the most frequent complaint areas are the electrical system (12) and engine (8), although the data does not specify the root causes of these reports. Safety data for 2021 includes two crash complaints and zero fire complaints. Because the 2021 model sits at a high point in the generation's complaint and recall arc relative to later years, this is not the ideal year to buy.

8
Open recalls
NHTSA campaigns
1149
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
69
Owner complaints
2 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 69 complaints on record, top 8 components.

Electrical System12
Engine8
Forward Collision Avoidance5
Power Train5
Electrical System,Structure3
Power Train,Electrical System,Engine3
Unknown Or Other3
Visibility2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 1149 bulletins on record with NHTSA.

BulletinDateComponentSummary
TSB_2076404_82026-06-29Unknown Or OtherThis bulletin provides a deployment overview for customer service packages MLB and MQB…
TSB_2074640_32026-06-26EngineThis bulletin provides information when there is increased oil consumption; >0.5ltr/1000…
TSB_2079226_52026-06-24StructureThis bulletin provides information when the sliding glass panoramic sunroof is leaking.
TSB_2074729_32026-06-23Electrical SystemThis bulletin provides informationwhen noises/vibration are detected from front of…
TSB_2059335_72026-06-23Electrical SystemThis bulletin provides information when there are noises from the area around the…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Q5 PHEV. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group R batteryVehicles taking 5.4 qtEngine oil filter 06L115562BEngine air filter 8W0133843CSpark plug 06K905601LBattery 000915089BC

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBsOBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 2021 Q5 PHEV take?

5.4 qt of Audi 0W-20 Synthetic, per the factory manual.

Does the 2021 Q5 PHEV have open recalls?

NHTSA lists 8 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Q5 PHEV get?

EPA figures are 23 city / 28 highway / 25 combined mpg.