2003 BMW 3 Series Sedan emission

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Condition	Value

expand_moreDiesel exhaust gas values

expand_moreCut-off control speed


330 d with diesel straight-6 2.9 L 181 HP engine (1999.10–2005.2)	4700–4900 rpm4700–4900 rpm4700–4900 rpm
330 xd with diesel straight-6 2.9 L 181 HP engine (2000.6–2005.2)	4700–4900 rpm4700–4900 rpm4700–4900 rpm
All other modifications	4700–4800 rpm4700–4800 rpm4700–4800 rpm


Maximum K-value	2.5 1/m2.5 1/m2.5 1/m

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


BMW gasoline straight-4 1.9 L M43 B19 (194E1) 114 HP	770–870 rpm770–870 rpm770–870 rpm
All other modifications	600–800 rpm600–800 rpm600–800 rpm

expand_moreIdling speed with manual gearbox


316 i with gasoline straight-4 1.8 L 114 HP engine (2002.2–2005.2)	600–800 rpm600–800 rpm600–800 rpm
316 i with gasoline straight-4 1.8 L 114 HP engine (2002.2–2005.2)	600–800 rpm600–800 rpm600–800 rpm
316 i with gasoline straight-4 1.9 L 114 HP engine (1998.9–2005.2)	750–850 rpm750–850 rpm750–850 rpm
318 i with gasoline straight-4 2.0 L 141 HP at 6200 RPM, 200 N⋅m at 3600 RPM engine (2001.9–2005.2)	600–800 rpm600–800 rpm600–800 rpm
318 i with gasoline straight-4 2.0 L 141 HP engine (2001.9–2005.2)	600–800 rpm600–800 rpm600–800 rpm
320 d with diesel straight-4 2.0 L 148 HP engine (2001.9–2005.2)	770–870 rpm770–870 rpm770–870 rpm
330 d with diesel straight-6 2.9 L 181 HP engine (1999.10–2005.2)	770–870 rpm770–870 rpm770–870 rpm
330 i with gasoline straight-6 3.0 L 228 HP engine (2000.6–2005.2)	650–750 rpm650–750 rpm650–750 rpm
330 xd with diesel straight-6 2.9 L 181 HP engine (2000.6–2005.2)	770–870 rpm770–870 rpm770–870 rpm
330 xi with gasoline straight-6 3.0 L 228 HP engine (2000.6–2005.2)	650–750 rpm650–750 rpm650–750 rpm
All other modifications	700–800 rpm700–800 rpm700–800 rpm

expand_moreMinimum engine oil temperature at VET


318 d with diesel straight-4 2.0 L 114 HP engine (2001.9–2003.3)	158°F158°F70°C
318 i with gasoline straight-4 2.0 L 141 HP at 6200 RPM, 200 N⋅m at 3600 RPM engine (2001.9–2005.2)	158°F158°F70°C
318 i with gasoline straight-4 2.0 L 141 HP engine (2001.9–2005.2)	158°F158°F70°C
320 d with diesel straight-4 2.0 L 148 HP engine (2001.9–2005.2)	158°F158°F70°C
330 d with diesel straight-6 2.9 L 181 HP engine (1999.10–2005.2)	158°F158°F70°C
330 xd with diesel straight-6 2.9 L 181 HP engine (2000.6–2005.2)	158°F158°F70°C
All other modifications	176°F176°F80°C

expand_morePetrol exhaust gas values


CO content at idling speed	0.5 %0.5 %0.5 %

expand_moreCO content at increased idling speed


BMW gasoline straight-4 1.8 L N46 B18 A 114 HP	0.3 %0.3 %0.3 %
BMW gasoline straight-4 1.8 L N42 B18 A 114 HP	0.3 %0.3 %0.3 %
BMW gasoline straight-4 2.0 L N46 B20 A 141 HP	0.3 %0.3 %0.3 %
BMW gasoline straight-4 2.0 L N42 B20 A 141 HP at 6200 RPM, 200 N⋅m at 3600 RPM	0.3 %0.3 %0.3 %
All other modifications	0.2 %0.2 %0.2 %


Current at test speed	−0.115–+0.077 A−0.115–+0.077 A−0.115–+0.077 A
Increased idling speed	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
Maximum HC content at idling	100 ppm100 ppm100 ppm
Petrol conditioning speed	3000 rpm3000 rpm3000 rpm
Petrol conditioning time	180 s180 s180 s
Test speed for lambda sensor signal	600–800 rpm600–800 rpm600–800 rpm

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

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 BMW 3 Series Sedan 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 BMW 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 BMW 3 Series Sedan 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 BMW 3 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

2003 BMW 3 Series Sedan Fourth generation LCI Emission

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Conquer your fears and never give up!

BMW 3 Series Sedan Fourth generation LCI model years

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