Both of these Spanish speaking countries have very similar sizes of car market. Argentina averages just over 730,000 sales since 2010 and Spain just short of 900,000 units sold. Years ago they both protected local manufacturing by import duties, but Spain no longer does so while Argentina has retained the practice.
The difference that makes is noticeable in the charts below. The difficulty that poses for importers into the Argentine is that the tariffs seam to be changed to regulate the balance of trade. So up to 2013, JLR is building sales up, then a duty change sends registrations crashing. Money is spent developing a market but it can all be undone with the stroke of a pen.
Argentina: Land Rover is what sells here with Jaguar for a few enthusiasts. The 4.5% share that Jaguar takes seems too small but in 2013 when LR was doing well, Jaguar didn't move up. The LR take of total Argentinian sales is a paltry 0.2% and Jaguar doesn't even register. All you could call it is a presence. Will LR models come down from Brazil where some are made to reduce tariffs?
Spain: JLR enjoys popularity here however Jaguar isn't that strong with 16% of the JLR pie. LR passed the 10,000 mark for the first time and has 0.82% of total sales. Combined it has a creditable 0.98% or basically 1% of all registrations.
Summary: When it comes to JLR, these markets are chalk and cheese.
Data source: ACARA (Argentina) & ANIACAM (Spain).