2003 Audi A3 Quattro emission

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Condition	Value

expand_moreDiesel exhaust gas values

expand_moreCut-off control speed


All Audi diesel straight-4 2.0 L AZV engines	4800–5200 rpm4800–5200 rpm4800–5200 rpm

expand_moreAll other modifications


BKD engine	4800–5200 rpm4800–5200 rpm4800–5200 rpm
CBAB engine	2400–2600 rpm2400–2600 rpm2400–2600 rpm


Diesel conditioning gas injections	10
from 60° C engine oil temperature

expand_moreDiesel conditioning speed


All Audi diesel straight-4 2.0 L AZV engines	4800–5200 rpm4800–5200 rpm4800–5200 rpm
from 60° C engine oil temperature

expand_moreAll other modifications


BKD engine	4800–5200 rpm4800–5200 rpm4800–5200 rpm
from 60° C engine oil temperature 10 gas impulses
CBAB engine	2400–2600 rpm2400–2600 rpm2400–2600 rpm
from 60° C engine oil temperature 10 gas impulses

expand_moreMaximum K-value


All Audi diesel straight-4 2.0 L AZV engines	2 1/m2 1/m2 1/m

expand_moreAll other modifications


BKD engine	2 1/m2 1/m2 1/m
CBAB engine	1 1/m1 1/m1 1/m


Measuring mode	B
Measuring sensor	1
Measuring time	0.5 s0.5 s0.5 s
Stoppage time	1 s1 s1 s

expand_moreGeneral exhaust gas values


Diagnostic socket location	The diagnostic socket is located on the driver's side in the footwell below the dashboard.

expand_moreIdling speed with automatic gearbox


All Audi diesel straight-4 2.0 L AZV engines	760–960 rpm760–960 rpm760–960 rpm
All other modifications	660–860 rpm660–860 rpm660–860 rpm

expand_moreIdling speed with manual gearbox


Audi diesel straight-4 2.0 L AZV 134 HP at 4000 RPM, 320 N⋅m at 1750 RPM	760–960 rpm760–960 rpm760–960 rpm
Audi gasoline vr-6 3.2 L BMJ 247 HP at 6300 RPM, 320 N⋅m at 2500 RPM	600–870 rpm600–870 rpm600–870 rpm
Audi gasoline V6 3.2 L BUB 247 HP at 6300 RPM, 320 N⋅m at 2500 RPM	600–870 rpm600–870 rpm600–870 rpm
Audi gasoline vr-6 3.2 L BDB 247 HP at 6300 RPM, 320 N⋅m at 2500 RPM	600–870 rpm600–870 rpm600–870 rpm
All other modifications	660–860 rpm660–860 rpm660–860 rpm


Minimum engine oil temperature at VET	176°F176°F80°C

expand_morePetrol exhaust gas values


CO content at idling speed	0–0.5 %0–0.5 %0–0.5 %
CO content at increased idling speed	0–0.2 %0–0.2 %0–0.2 %
Delta lambda	0.03 λ0.03 λ0.03 λ

expand_moreIncreased idling speed


All other modifications	2500–3000 rpm2500–3000 rpm2500–3000 rpm


Lambda sensor design	wideband sensor
Lambda value	0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ

expand_morePetrol conditioning speed


All other modifications	2500–3000 rpm2500–3000 rpm2500–3000 rpm


Petrol conditioning time	120 s120 s120 s

expand_moreTest speed for lambda sensor signal


Audi gasoline vr-6 3.2 L BDB 247 HP at 6300 RPM, 320 N⋅m at 2500 RPM	600–870 rpm600–870 rpm600–870 rpm
Audi gasoline V6 3.2 L BUB 247 HP at 6300 RPM, 320 N⋅m at 2500 RPM	600–870 rpm600–870 rpm600–870 rpm
Audi gasoline vr-6 3.2 L BMJ 247 HP at 6300 RPM, 320 N⋅m at 2500 RPM	600–870 rpm600–870 rpm600–870 rpm

To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Audi.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Audi A3 Quattro user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi A3 Quattro service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2003 Audi A3 Quattro you're not only saving money, but also also improving your technical skills and learning something new.

2003 Audi A3 Quattro generations

In 2003 Audi offered 2 generations of the A3 Quattro. Emission may vary in different generations. Be sure that you are looking at the rigt modification.

First generation facelift

Type 8L1

2003 Audi A3 Quattro Second generation Emission

Table of Contents

Conquer your fears and never give up!

2003 Audi A3 Quattro generations

First generation facelift

Audi A3 Quattro Second generation model years

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