Thought the Mercedes-Benz A45 AMG had an
extraordinarily powerful 2.0-litre turbocharged four-pot engine? Think
again. And then think some more, because Audi has just revealed the TT
Sport Quattro Concept in Geneva. It has a 2.0-litre turbocharged
4cyl. And it has 420bhp.
The fight is on... “This car is designed for racing,” explains Dr Ulrich Hackenberg,
Audi’s board member for technical development. And that engine is quite a
It’s the same EA888 engine you’ll find in the new
Golf R, but here, its 2.0-litre capacity has been blown to smithereens,
producing 420bhp at 6,700rpm and with 331lb ft of torque available
between 2,400rpm and 6,300rpm. In fact, 221lb ft
of that output is available from 1,900rpm.
Audi tells us the specific output of this monster
engine is 210bhp per litre, which is more than even the 2001 R18 Le Mans
car, and combined with quattro all-wheel-drive, will go from 0-62mph in
just 3.7 seconds.
In fact, we’re told each horsepower has to shift
just 3.2kg of Audi TT Sport Quattro Concept, what with it weighing in –
without the driver – at 1,344kg. Not quite the 1340kg-1340bhp of the
Koenigsegg Agera One:1, but heck, this is an Audi
There is Audi’s variable valve timing system, dual
camshaft adjustment and a dual injection system (FSI plus MPI). The
pistons are aluminium with integrated cooling channels inside, and the
crank is made from ultra-high strength forged
steel. Y’know, because it’s got 420bhp.
To accommodate the extra grunt, that EA888 cylinder
crankcase is made of a high-strength cast alloy, while that turbo is a
newly developed unit producing up to 1.8 bar of pressure. As such, it
revs to 7,200rpm, running through a three-shaft
dual-clutch automatic gearbox.
The whole thing sits on the new MQB matrix, and is
stiffer than the now woefully underpowered new Audi TT, and there’s
‘wheel-selective torque control’. This transfers torque from the inside
wheel to the outside wheel during cornering when
things are getting hairy. With 420bhp, they most definitely will be.
The front of the concept car is made of steel. The
exterior ‘skin’, doors and lids are made of semi-finished aluminium and
sheet metal. The wheels are 20 inchers sitting on semi slicks. The front
splitter, wheel arches – 30mm wider than
on the regular TT – and rear diffuser are made from CFRP, while there’s
also the obligatory massive fixed rear wing to generate many
There is more racing paraphernalia inside, too:
naked door panels, Alcantara everywhere, low-set racing buckets with
four-point harnesses, and space in the boot for two racing helmets.
“This high performance power unit is an impressive
demonstration of the power reserves available in our EA888 engine
range,” says Dr Stefan Knirsch, head of powertrain development. “Thirty
five years of experience we’ve gained in the field
of turbocharging are manifested in this engine’s unique combination of
max performance, dynamism and fuel efficiency.” Tellingly, there is no
word on fuel efficiency.
But with 420bhp, do you really care?