From £38,905
Facelifted Q7 becomes UK's first super-clean diesel car

What is it?

This is the Audi Q7 3.0 TDI Clean Diesel. Over the next few years, diesel cars are going to get slightly more complicated. Strict Euro6 emission regulations kicking in from 2014 will require most oil burners to use a urea-based additive called AdBlue, which, with engine management changes, almost eliminates smog-generating nitrogen oxide (NOx).

The need to meet similar regulations in the US right now means selling the technology in Europe, so the newly facelifted Audi Q7 3.0 TDI Clean Diesel is the first low-NOx diesel to be offered in the UK, and the first to need AdBlue. Its additional 23-litre tank, good for over 18,000 miles, is replenished during services, its filler positioned beside the diesel’s. A special tool is used to remove its cap and prevent mis-fuelling.

Revised injection and emission controls complete the Clean Diesel modifications, which add a sizeable £1500 to the price of the still-available conventional 3.0 TDI V6. NOx output drops by around 90 per cent, but the fuel consumption and CO2 gains are minimal, limiting the point of this version unless you want to drive greenly, in which case the hefty Q7 makes an odd choice.

All versions of the Audi Q7 also now get fuel-saving alternators. Mild revisions to the grille, bumpers, tailgate, tail-lights, dashboard, rear seat and MMI infotainment system complete the revisions.

What’s it like?

Statistically the Audi Q7 3.0 TDI’s performance is unchanged in the transformation into the Q7 3.0 TDI Clean Diesel, but its cleaner engine occasionally sounds more grumbly at low revs, a deficiency heightened by the occasionally abrupt gearshift. Neither flaw spoils the impression of restful progress as much as the ride, which is jittery on bumpy roads.

More impressive is huge Audi Q7 3.0 TDI Clean Diesel’s ability to round bends with unlikely poise. Despite its gargantuan presence, the Audi Q7 remains averagely packaged, the middle seat of the middle row narrow and unyielding, its load-deck wastefully high. But it does carry seven people.

Should I buy one?

The Audi Q7 will be too large, bulky and ostentatious for some, and the Clean Diesel’s low emissions come at a price (both in terms of refinement and straightforward cash). But if you can cope with the size and want to be on the cutting edge of diesel technology, the Q7 3.0 TDI Clean Diesel is certainly worth a look.


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13 May 2009

We need this tech to be made mandatory now in Taxis and Buses, rather than in this bus sized great lump.

13 May 2009

Audi have pulled off a difficult trick with the Q7 - it's both horribly ugly AND completely tasteless. Not as easy to achieve as you might think and further proof of just how cunning those Germans are. Plus, from an environmental point of view, adding an adblue tank to one these despicable lumps is akin to putting a sticking plaster on a bullet wound.

13 May 2009

Anyone want to play 'guess the year' ?

... that AdBlue is found to be carcinogenic and is banned whilst 5 million cancer sufferers join a class action against a company that conveniently goes insolvent.

13 May 2009

firstly this car is both horribly ugly and such a waste of space!!its not even that green!!

Secondly why anyone would want to spend £40000 on something like this is beyond me???When you compare this to the equivelent X5 3.0d the Beemer beats it hands down!!

There, rant over!

13 May 2009

[quote Autocar] called AdBlue, which, with engine management changes, almost eliminates smog-generating nitrogen oxide (NOx).[/quote]

Smog may be almost eliminated, but smugness isn't.

I've said it before and I'll say it again: in brown, this "car" looks like a polished turd.

13 May 2009

18000 miles on a tank of urea, which the dealer fills up? This should be an interesting one.

When the urea runs out, does this imediately put the car in to limp home mode (like particulate filter cars) or will it run happily without it? If it does run without it, what are the chances of the tanks ever being filled up again?

This may sound cynical, but it sounds like more trouble than its worth!

13 May 2009

if they dont get refilled, then they will not be road legal as soon as they get to 3 years old and the MOT tests their emissions. i think this is a better system as taxis have said they would be better off taking out their particulate filters and refitting them for MOT only, as the filter reduces output and mpg. the adblue will add 23kgs to be carried about at all times, but it shouldnt reduce engine efficiency i dont think?

anyway i suggest we go straight to EURO X regulations ( ban diesel).

13 May 2009

[quote beachland2] if they dont get refilled, then they will not be road legal as soon as they get to 3 years old and the MOT tests their emissions.[/quote]

As you suggested with the particulate filters, how long before someone like Halfords does a "tank top up kit"..... just enough to get you through an MOT?!?!

13 May 2009

true, depends on how expensive the adblue is, it shouldnt be too pricey, similar price to screenwash perhaps. but i'm sure the car ECU would easily detect if there is no additive running. and could be programmed to not run well enough to be used practically, a limp mode as suggested.

which could be bypassed with a custom ECU, but there would be no point if the adblue is cheaper to refill anyway.

14 May 2009


What a load of total tosh.

What kind of resources are we using to create this rubbish?

Lets combat one area that the media have controlled the world with and create another problem for later.

Sorry if you really require an SUV and you feel concerned about the environment then an X5 3.0d is a better bet, but then how many people fit that catagory?

Oh and yes Urea does look big in this.


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