Actually, Now that I think about it.. the Seat Ibiza 1.4tdi manual recommends that you drive "spiritedly" regularly to get exhaust temps high enough to avoid the need for regeneration..
Is it worth modifying, say, your motorway on ramp approach to hold a lower gear to get above 4k before going back to your usual driving?
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US MPG for my Renault Clio 182
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