CO2 at MOT

[s70rjw]

Gents and Ladies. Looking at the last 3 MOTs for the wifes 2000 X 1.5i S Almera, the CO2 level is creeping up. Today at MOT (at 63800 miles) it produced a CO2 reading of 0.19 with a 2.0 limit. Last year the reading was 0.126. The year before that 0.00. Is this natural ageing? The car had new plugs fitted by Nissan 1000 miles ago. From new oil has been changed every 6 months, with semi synthetic oil. Is this a sign that there are big bills to come? Any ideas appreciated or am I being paranoid as it runs like new. Cheers

 

[DBull]

Just the natural progression of engine wear & tear.

It's normal bud, and I wouldn't worry about it.

 

[davva]

mines the same mate

the o2 sensors are only good for about 50000 and i had to replace mine but it was only 30 quid