Engine serial number

	Example	B 23 4 I3 M 00 R000001
Pos. 1	Engine type B=Petrol engine
Pos. 2-3	Swept volume 20=1.985 dm ^{3 23=2.290 dm<sup>3}
Pos. 4	Cylinder head 4=4 cylinders, in-line block with 2 balancer shafts and cylinder head with 2 camshafts and 4 valves per cylinder 6=4 cylinders, in-line block with no balancer shafts and cylinder head with 2 camshafts and 4 valves per cylinder
Pos. 5	Version I=Fuel injection L=Supercharged engine with charge air cooler, stage 1
Pos. 6	Exhaust emission control specification 3=Saab 900 to European regulation 91/441/EEC, Swedish regulation A13 (environment class C) and US CFR 40 part 86 5 = Saab 900 to State of California Administration Code Title 13, Swedish regulation A14 (environment class C) and US CFR 40 part 86 7 = Saab 900 to US/CARB TLEV and Swedish regulation A14 (environment class C)
Pos. 7	Transmission A=Automatic transmission M=Manual gearbox
Pos. 8-9	Variant 00=Basic model 18=Designed for SENSONIC
Pos. 10	Model year designation according to FMVSS 115 R=1994
Pos. 11-16	Serial number