Just for info, my car recently passed the MOT test (facelift edition, model year 2000 A8L) with the following figures:
HC (limit 200) - reading was 46 ppm vol
Lambda (limit 0.97-1.03) - reading was 1.006
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2010 B8 S5 Sportback quattro 3.0 Supercharged in Sprint Blue (current girlfriend)
2000 D2 A8L quattro 4.2 in Audi silver (my ex-girlfriend)
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