This variability must be considered real and lone spikes sticking out above and below it are most likely erroneous readings. (tamino.wordpress.com)
That's a completely erroneous reading of the reported percentages — because Amazon's aggregate customers are not the same statistical set as one's own specific customers. (bidinotto.com)
The oil level is checked through the iDrive system and this can give erroneous readings. (evo.co.uk)