I've tried a search both on here and www but can't come up with an answer.

I'm getting an SD4 but what does SD stand for?

Logic tells me that TD stands for Turbo Diesel(?) and the 4 (cylinders?) but that may be totally wrong.

I understand the performance difference but why the double branding.

I may have said before but on other forums I have used the name Dumb Tony!! Now you know why.

RR

I think TD4 means Turbo Diesel 4-wheel drive. SD4 doesn't mean anything I don't think, it just implies that it's more powerful than the TD4. Am I wrong?

Supercharged Diesel  21MY Defender 90 S 3.0 D200

SD is for "Sport" Diesel (190HP) as opposed to Turbo Diesel (150HP)> The engine was remapped at the top end for the Evoque to give it a more sproty profile and the same engine was then offered as a cost option on Freelander.
No change in torque or legilsative cycle fuel economy, but note that autommap and manual map are different (All autos have more torque becuase of a limit on the low ratios load limit in the manual Gone... 2013 XS TD4 Manual Firenze Red
Gone... 2008 (09MY) XS Td4 Manual Stornaway Grey
Prior... 2003 G4 Discovery 2, 1998 Disco 1 and 1997 Disco 1 Company car before that
Also gone in Nov'13, after 7.5 yrs, to new owners with time for more TLC - 1980 Series III 88
Current 2015 Discovery Sport HSE 2.0

TD4 turbo diesel four cylinder,TD5 turbo diesel five cyliners TDV6 turbo diesel 6 cylinders

Chris B wrote:

SD is for "Sport" Diesel (190HP) as opposed to Turbo Diesel (150HP)> The engine was remapped at the top end for the Evoque to give it a more sproty profile and the same engine was then offered as a cost option on Freelander.
No change in torque or legilsative cycle fuel economy, but note that autommap and manual map are different (All autos have more torque becuase of a limit on the low ratios load limit in the manual

Chris B wrote:

SD is for "Sport" Diesel (190HP) as opposed to Turbo Diesel (150HP)>