No, I am not wrong. The credit expired at the end of 2010. If you claimed the credit in tax year 2011 (filed this year) then your filed an incorrect tax return. You could claim a 2011 MY on your 2010 tax return only if you purchased the car before December 31, 2010. It doesn't matter when you registered it.
The link you provided is a list of vehicles that were eligible if purchased by December 31, 2010
. It is linked to this IRS page: Qualified Advanced Lean Burn Technology Vehicles
The reason there is nothing in the "Note" column for BMW and Mercedes is not because they are still eligible, it is because they never sold enough diesels to reach the phase out thresholds. The credit expired for ALL
diesels on December 31, 2010 whether or not they reached the phase out thresholds.
I purchased my 2011 335d in December 2011. I was not eligible to claim the credit as it had already expired.
I purchased both a 2010 VW Jetta Sportwagen TDI and a 2010 VW Golf TDI in 2010. I claimed $3000 of tax credit on my 2010 tax return.