Top Luxury Cars | First Test: 2010 Audi R8 V-10

What's the difference in the V-10 engines that power the top Audi and Lamborghini's crown prince? As it turns out, not much. Both share the same basic components and architecture: a 90-degree V-angle, DOHC 4-valves per cylinder top end, mostly aluminum construction. The forged-steel crankshaft and connecting rods and forged aluminum pistons providing a 12.5:1 compression ratio are also shared by both sports cars.

According to Volkswagen AG's powertrain head Wolfgang Hatz and Audi's V-8 and V-10 chief Jurgen Jablonski, the differences are subtle and restricted to intake and exhaust details. Engine mapping-combinations of ignition timing, fuel delivery, valve timing, and operation of the muffler bypass valves-differs to give the Lamborghini engine a more urgent and aggressive personality versus the Audi's slightly steadier, more sedate characteristics. Minor differences in the shape of the intake ports and the configuration of the twin intake plenums topping each engine are also present. While exhaust headers are basically the same, the layout of the mufflers differs significantly according to the space available under each car and the auditory flavor desired by each brand.

Lamborghini chose an untamed in-your-face howl that starts early and lasts until the revs run out at 8700 rpm. Audi R8 engineers selected a deeper, less frenetic voice. Stand on the gas in the Gallardo and the V-10 overwhelms the cockpit with an Italian serenade. In the Audi, triggering the throttle hurtles you expeditiously away from a wake roiling with dust and commotion.

The stats tell the rest of the story. The Lamborghini engine tops at with 552 versus the R8's 525 horsepower at 8000 rpm. The more expensive Gallardo also tops Audi's torque with 398 lb-ft versus the R8's 391 lb-ft at 6500 rpm. While both cars are quick, R8 drivers will enjoy a clear view of a rapidly shrinking Gallardo's rear bumper when the green flag drops.

2011 Audi R8 5.2 FSI Specifications and Test Data

Power: 525 hp @ 8000 rpm
Torque: 391 lb-ft @ 6500 rpm

Weight: 3583 lbs
Weight distribution (percent, front/rear): 45/55

0-60 mph: 3.8 sec
0-100 mph: 8.5 sec
0-110 mph: 10.3 sec
0-120 mph: 12.1 sec
0-130 mph: 14.9 sec
0-140 mph: 17.0 sec
0-150 mph: 20.0 sec

1/4 mile pass: 12.1 sec @ 120 mph

Peak acceleration g: 0.87

30-70 mph "passing:" 4.0 sec

70-0 mph braking: 151 ft
Peak deceleration g: 1.19

Power: 525 hp @ 8000 rpm
391 lb-ft @ 6500 rpm

Speed in Gears:

-1st: 48 mph
-2nd: 78 mph
-3rd: 109 mph
-4th: 140 mph
-5th: 169 mph
-6th: 196 mph

Top Luxury Cars | 2011 Chevy Volt - From Show Car to Showroom

The 2007 Chevrolet Volt concept dazzled, even more than General Motors expected. For 2010 production, however, it has to use existing component sets, which naturally make the Volt more mainstream and cheaper to build. The changes also give the car lower drag, more cabin space, and a tighter turning circle. The designer of both vehicles, Bob Boniface, says that concept cars are "not a contract with the general public" and that the commercial product is a much better car. We tend to agree with him. Polarizing design can impress but lose sales. GM needs this car to succeed. So do we all.

From Concept to Production

1 The deeply inset grille and the sharp crease from the lower lamps were terrible for aerodynamics, and the recessed lamps were neither adequate for illumination nor legal.

2 Multiple hard surface-change lines on the front of the concept tended to confuse and retard oncoming air molecules. Smoothing the front end helps aerodynamically and simplifies production.

3 Saab 99-like, the tank-slit wraparound windshield was deemed likely to compete with plans for future Saab products. But GM may sell Saab anyway.

4 The sharp break from windshield to roof was likewise considered too Saab-like, and it was also aerodynamically undesirable, thus the change to uninterrupted flowing glass.

5 Big bulges for oversize - 21-inch - wheels were another drag-increasing styling element that had to go for the production car.

6 The grille shape was retained, but air flows into the engine compartment only through peripheral slots around the grille shield, which retains its diamond texture. Most air enters below the bumper.

7 Headlamps had to be bigger for adequate lighting, and wrapping them around the front end let side markers be incorporated.

8 The impossible-to-clean transparent fairings from the show car have been replaced by painted sheetmetal, which visually extends the height of the side glass.

9 These 17-inch wheels look much like the show car's 21-inch units, but in fact, they have been refined to reduce aerodynamic drag. Small details count when there's not much power available.

10 The continuous sweep of glass from windshield to roof is excellent for aerodynamic drag reduction, but it also gives the car a softer, safer appearance, desirable for a family car.

Top Luxury Cars | New and Future Lexus Cars

 

2011 Lexus LF-A

Recession or not, here I come!

Just like you, we always want to know what's coming next from Detroit, Tokyo, Stuttgart, Munich, Los Angeles, and all the other places where automotive engineers and designers dream and scheme on our behalf. Car companies, of course, are loath to share information on new products lest their competitors try to copy them--or you decide not to buy the cars they already have on dealer lots. Car companies, though, are simply groups of people, and some of them have a hard time keeping secrets. So, we poke, we prod, we cajole, and we uncover information that becomes the basis for our annual Sneak Preview issue. As always, some of our information is educated guesswork based on hints, insinuations, hunches. Make no mistake, though, these cars are on their way, even though details may change. Ladies and gentlemen: our list of 136 cars coming over the next few years Did you think that the worldwide economic meltdown meant that Toyota was canceling its long-planned LF-A supercar project? Think again. The LF-A is a pet project of new chief Akio Toyoda and therefore remains very much on track. In fact, we'll finally see the production-spec car at the Tokyo Motor Show this October, and the V-10-engined coupe will go on sale late in 2010. With the car's development costs ballooning way beyond initial estimates due to increased use of carbon fiber and other exotic materials, a very limited production run is planned. After the LF-A is introduced, the company will take orders for about a year, deliver a predetermined number of cars (fewer than 1000 units is a good guess), and then cease production, going out on a high note. How much money are we talking? Well over $300,000, which puts the LF-A firmly in Ferrari 599GTB Fiorano and Lamborghini Murciélago territory.

Actual performance statistics remain murky at this point, but we know that the LF-A will look essentially like the front-engine concept from the 2007 Detroit auto show, and it will be powered by a V-10 making in excess of 500 hp.