15 Which is the most powerful diesel car?

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Watching this Autocar first impression video of the new Audi SQ7, I thought to myself - is this the most powerful diesel passenger car in production today?

First of all, I didn't expect the SQ7 to be a diesel, even if there is the SQ5 with 308 and 340 PS diesel V6.

Over the years there have been several extremely powerful passenger car diesel engines, and most came from within the VW group.

Many years ago it was the 300 PS V10 TDI engine which found application in first generation VW Touareg and VW Phaeton. Fast forward several years and we got the lineal successor - equally mad and more powerful 500 PS V12 diesel.

The V12 TDI, despite rumors of use in Audi R8 (that would be a terrible idea), was only powering the Q7. Despite limited use, most people could appreciate the concept of stupidly powerful diesel SUV - even Jeremy Clarkson liked it, and that's saying a lot, knowing Clarkson's opinion on diesel cars in general.

More rational 8 cylinder TDI was also available for Q7, as well as A8 abd VW Touareg, and received numerous upgrades over the years, peaking out at 385 PS.

BMW also participated in this diesel "arms race", most notably with the oddly named m550d. This 3 liter, 3 turbo inline 6 produced 381 PS. The same "tri-turbo" is also used in current X5 and X6 series.

On the other side of Atlantic, where diesel cars are not loved or even understood as in Europe, diesel engine has found acceptance in pick-up truck culture.

These (mostly) non-commercial vehicles can be classified as "passenger cars" and they do offer some very, very powerful "oil burners". Take Ford Powerstroke V8, for example - it comes with all environment-saving features you can think of, yet still puts out 1166 Nm and 450 horsepower.

High torque and always available and sustainable torque is what diesel engines are built for. The 4 liter V8 in Audi SQ7 is another milestone in diesel car advancement.

It produces peak torque at incredible 1000 rpm, and can deliver it with less latency, thanks to new technology - electric compressor that spins up almost instantly, and fills the gap in induction pressure before turbo spools up.

With diesel cars already outnumbering gasoline cars in Europe, it is natural to see them creep into performance segment as well. Especially for large SUVs and luxury sedans where diesel is a "no-brainer" choice for vast majority of buyers.

9y ago by FastestLaps
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biscione  9y ago

1: Yes, I do. It is really ugly.
2: More than 5 metres long, 2.000 kg weight... why does this car is on Fastestlaps? This car is closer to a bus than to a car.
3: Can you explain the meaning of a 430 hp diesel SUV? If you won't a sporty SUV, how could you explain these power output?
4: I'm still searching for a really lightweight Audi...


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BR2+  9y ago

1: Really? You think this is Ugly?..

2: Of course its a heavyweight, its an Audi Suv, Do you expect it to weighas much as a 911?..

3: Who buys a diesel anything to enjoy the "Drive"?...


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Murmur  9y ago

Some years ago, new cars sold in France were 70% diesel; in 2014, they were 64%; in 2015, 59%; currently, it's 52%.

Have a good reading:

https://www.google.it/webhp?hl=en#hl=en&q=france+ban+diesel+cars

https://www.google.it/webhp?hl=en#hl=en&q=london+ban+diesel+cars


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biscione  9y ago

Ugly. Useless. Polluting. Ultra-heavyweight. Unpleasant to drive. This is the fastest truck you can find on a public road.


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saxy  9y ago

fastest: I wasn't saying the world runs out of energy source, but the capacity for electricity usage rate. Americans readily every year go through power shortages during the hot summers. with more population, more global warming, we'll need more air con, etc.

certainly you could just use the fuel that would have been burnt by cars, and use that to power powerplants... I understand the electric car is still a lot more efficient than gasoline engined cars, but still doesn't give it a full pass IMO. It's still affecting the environment however you put it.

avg cost of electricity is $0.12 per kwh... so for a p85 model S, a full charge would cost about $10 if you use your own home socket. Elsewhere where electricity is more expensive it could cost $25. Of course you could go for the free Tesla stations, but then... you might have to wait in line for a while, in your car.


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cosimo  9y ago

streets of france (land of socialists) without turning on an engine

550x800m

Diesel engines are much more cleaner and the dieselgate scandal they pulled is to boost their damn electric car sales.

America, land of capitalism, hypocrites, super sized XXXXXL bbw milfs and cows.

Pollution in action, only in murica

https://www.youtube.com/watch?v=ygbVUEn_mHc


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FastestLaps  9y ago

saxy, electricity can come from any energy source. You can't "run out of electricity" globally. That would mean you have also run out of coal, oil, uranium, wind and that all rivers have stopped :D

But you can (and will) run out of fossil fuels. Diesel cars ARE NOT cars of the future. They are more efficient stop-gap measure on our way to electric cars.

How are we going to produce electricity for those electric cars? That's a challenge. But it's certain that we won't "run out" of electricity.


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saxy  9y ago

With population growth, higher demand of living standards, more use of aircon... How does the world find enough electricity to also run all the cars on the road... ????


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BR2+  9y ago

I dont think that will happen


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FastestLaps  9y ago

France banning diesels? That would mean banning most of the cars and all commercial vehicles.

I also disagree about "more polluting, dirtier and louder". CO2 emissions are actually less than for petrol engines, "dirty" is a non-argument and "louder" is not a serious issue. The difference in noise and vibration is not something that has worried the consumer too much since late 1990s and direct injection.


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Murmur  9y ago

After the boom of the 2000-2010, Diesel engines have numbered years. They will always be noisier, dirtier and more polluting. With the rapidly increasing toughening of environmental regulations and the competition of hybrids and electrics, diesels will soon have a very hard Life. France (one of the biggest producer of diesel cars) is seriously discussing of an eventi al ban of all diesels


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saxy  9y ago

Yeah I know, but we also know le mans race engines are running with a LOT less fuel than they used to, much lighter too, so it's safe to say, the heavier more thirsty road versions should be producing similar power... look at the petrol side. 500hp from a 2.0L, that's 250hp/L, many production cars produce near if not more than that.


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FastestLaps  9y ago

Dude, R18 engine is a race engine. This is same displacement and comparable power, yet it will run (comparatively) forever.

Power per displacement is trough the roof. For petrols and now it seems for diesels too.

This is the new king of car diesel engines. When autocar stated the power output and displacement, I was convinced it was the good old 4.0 petrol TT. But then he said "peak torque at 1000 rpm"... My first reaction was "oh crap, diesels are finished if petrol can do that much torque at 1000" :D But it turns out to be diesel.


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saxy  9y ago

The tech is there. Audis 4.0 TDI in its R18 has around 500hp, and relatively fuel efficient.

But for sports cars, why would u take that over say a 2.0L turbo V4 that also made about 500hp.


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BR2+  9y ago

...Diesels....Arent for me...

Although id love to see Diesels get into the "Real" performance game. 911 Carrera D, Camaro D, Aston Mart.....Wait thats just going too far....