Software Best Practices

Can anyone point me to a resource that would provide industry data identifying the relative composition of an embedded system by functionality? For example: In an automotive ECU what percentage of the total LOC are used for running the communication bus, for built-in-test, obtaining and conditioning...

[quote user="Panagiotis Kanavos"]The tool is quite useful for creating estimates, but I feel that the data it uses is quite old now. In particular, the LOC estimates for VB.NET and C# feel wrong, with VB.NET requiring almost half the LOCs per feature point that C# does. My experience is that...