I did the math and it's $5K (US dollars) more expensive in the UK for the popular TT version of diesel engine.
I'm reading early 2013 for US to get diesel. I'm not estimating that it will be the highest volume or predominate selling version in US market, but it's still a important addition to product line that needs to happen. Certainly VW has done well in US market selling diesels in volume.
Regarding the US cost of diesel, it's NOT going to be $5,000.
If I look at the price difference in Australia of all components and add-ons, we're paying about 50% extra on top of US prices.
To get a diesel costs us $3000 extra.
I would estimate the additional cost would be $2000.
For the performance increase though, it's a complete bargain.
Google any comparison between the two in news articles in Australia and you'll see the same thing repeated.....
The gasoline is an "slow elephant" where as the diesel is a "sports performance car like SUV".
The diesels' sales are so high everywhere mainly due to how bad the petrol is.
The CX-5 is now the 7th biggest seller in Australia, with nearly 70% of all sales being the diesel.
Unfortunately the diesel is NOT available on the base vehicle - which was expected to be the main seller. So in effect, instead of paying $3000 to get a diesel, many are having to spend the extra $10,000 to go up a model wrung and then option the diesel.
But go into any Mazda showroom after people do a side by side comparison and their response is the same. The petrol is "slow"!.
Heck.... Motor Trend said it themselves and they don't have a diesel to compare with.
Regarding the Tiguan....
The same Australian car magazine that trashed the petrol CX-5 and praised the CX-5 diesel, also went to say the reverse of the Tiguan. They reckon the turbo petrol is far better than the Tiguan diesel.
I think the main reason for the CX-5's diesel success is two factors:
1. Use of twin turbo (one for 1000rpm and one for high rpm)
2. Radical change to compression ratio to allow higher rpm - the Tiguan engine is old school and lardy in comparison
The torque and power of the CX-5 diesel are much higher than the Tiguan, and the performance puts it well ahead of even the turbo petrol Tiguan (which is considered to be a good performer).
The Turbo-petrol Tiguan has a slightly fast 0-60 speed. But on the highway overtake, the diesel CX-5 smashes the Tiguan.
Motor Trend compares:
Tiguan Turbo Gasoline:
0-60: 7.8 seconds
PASSING: 4.2 seconds
Mazda CX-5 Gasoline:
0-60: 9.4 seconds
PASSING: 5.2 seconds
Using Australian figures:
Mazda CX-5 Twin-turbo Diesel
0-60: 8.0 seconds
PASSING: 3.8 seconds