It’s hard to do battle with MINI in the premium compact segment. The Cooper and its derivatives bring style and nostalgia to the game, proving that consumers are okay with spending some hard-earned scratch on an iconic coupe.

The Audi A1 Sportback – designed to fill the slot left by the discontinued A2 – lacks the MINI’s wistful sensibilities, but it comes packing an extra set of doors, four usable seats, some handsome sheetmetal and an multimedia interface that ties in with the driver’s mobile phone to provide navigation, music and an internet connection. Oh, and it can make calls too.

A 1.4-liter TSI engine equipped with both a turbo and supercharger puts out 150 hp to the front wheels through Audi’s S-tronic dual-clutch gearbox, and a 27 hp (and 111 lb.-ft.) electric motor drawing power from a lithium-ion battery pack can motivate the A1 in start-and-stop traffic. Look for the production A1 to debut early next year, with sales beginning in late 2009.

We’re still sour that the Scirocco isn’t making it to our shores, but Volkswagen is throwing us a bone with the restyled 2009 MK VI GTI. The new front end made a successful transition from the low-slung hatch that’s beyond our reach, finally eschewing the gaping maw that’s afflicted Audi designs of late. Both three- and five-door variants were on hand here at the Paris Motor Show, and overall, we’re even more smitten with version six then we were with the outgoing model.

As reported previously, the new GTI is packing a revised 2.0-liter TFSI four putting out 210 hp and 207 lb-ft of torque through either a six-speed manual or DSG gearbox and on to the front wheels through a new electronic limited-slip differential (XDS).

After spending some time inside we were reminded that VW (and Audi) still make some of the best interiors in the biz, with suitably supportive seats, confident switchgear and a small diameter steering wheel that we want to put under our pillow at night.

The Honda Insight concept took a hushed bow under the lights of Paris today. It’s Prius-esque, but in person the car is less evocative of its Toyota challenger. The Insight’s width and rather low height give it a substantial presence, and there’s a bit of attitude out back with the hatch sliding into a flick of a tail. We imagine some of the more complex elements, such as the headlights reminiscent of shards from Superman’s home planet of Krypton, will not make it to production. We hope the interior, however, is left untouched — it is just the right blend of tech and common currency. The production version will be introduced to the public at the Detroit Auto Show in January and pricing is rumored to be just under $19,000 when it goes on sale.

Nissan wants to reshape the way we make our way around Gotham, and the Nuvu concept is a means to that greener end. Built atop a new platform measuring around three meters long and featuring an electric drivetrain, Nissan claims that the 2+1 concept is the perfect city car for a better tomorrow.

While the bulbous roofline, squat overhangs and oh-so-cheeky leaf-shaped solar panels (leading into a “trunk” to supply power to the batteries) may be a bit over the top, expect to see some of the styling cues make their way to the revised Note in the next decade, along with Nissan’s production EV that’s supposedly hitting Japan and the U.S. in 2010.

Like so many shows in recent memory, part of the theme in Paris is “green.” So in addition to the Nissan Nuvu micro EV, Mazda took the wraps off yet another Nagare-themed concept, the Kiyora.

Taking inspiration from past design studies and its Japanese name, which translates to “clean and pure,” the Kiyora will influence Mazda’s next city car, due to replace the Mazda2 in the middle of the next decade. Measuring in at 3,770mm, the four-seat city car features a 1.3-liter gasoline-powered engine with direct injection and more efficient combustion chambers mated to a six-speed automatic gearbox. Weight and aerodynamics are two key elements of the Kiyora, and with a body made almost entirely of carbon fiber and a drag reduced by 10 percent over the current Mazda2, the diminutive city car would put out less than 90g/km of CO2… if it goes into production.

You’ve seen the whole Estoque shebang in Lamborghini’s words, pictures, and videos. Let us add our own word to it: hmmm. It’s a Lamborghini, so it’s hard not to like it. And we hate to tread out the refrain, but it’s much nicer in person. It feels, though, like they wanted to get this thing done in time for the show, and it needs a couple more drafts. The front aspect is spot on — not a tough feat since it’s Lamborghini’s language. From the side, the it looks a little too stretched forward of the A-pillar, and there’s more than one personality fighting for attention if you follow the car from snout to rear. And the back, while beautiful, is… yes… Challenger-esque… But don’t take our words for it — have a look at the high-res gallery below and give us yours.

The day is here, the GTbyCitroen has got over its shyness and is ready to be seen by the world. Par for the French, the GT is funky — and we’re not even going to get into the seventh teaser for the car in which the car was completely covered. Contrary to the rakishness of its looks, it’s also fairly slow. The 3,000-pound two-seater takes a virtual 3.6 seconds to get to a virtual 62 mph, and that’s with a 646 digital ponies boosted by an additional 136 hydrogen-powered horses. As for the design, if you’re wondering what that rear overhang is about, the phrase you’re looking for is “retinal persistence.”

Even for utilitarian transport, the Colt is a fine looking vehicle – Mitsu’s new grille is a one-size-fits-all beautifier, and there are some nice details around the car. The dip in the headlights isn’t original, but it’s executed with a flavor of its own. Inside it’s plastic city and several bolts of cloth, but again, while there’s nothing exactly special about it, there’s nothing that would make you go “Ugh.” The Colt Ralliart edition (above), however, is a treat. The details outside don’t change much save for a wheel finish and a larger tailpipe, but the massively bolstered leather seats completely remake the interior. Check out the press release on the new Colts after the jump, and the galleries below: one of live shots, the other a massive folder of press shots that even includes some vintage Colt rally action.

Audi’s parent company Volkswagen already produces some of the cleanest-burning, most fuel-miserly diesel engines in the world. The Jetta TDI was recently released in the U.S. and has been making waves for its hybrid-like efficiency. So it’s natural that Audi would want to show off its green credentials with a new diesel sedan of its own, and it has done so with the A4 TDI concept e, introduced at the Paris Motor Show. Based on the brand-new A4 platform, the new concept gets a 2.0L four-cylinder common-rail direct-inject turbodiesel derived from the unit powering the Jetta TDI. That mill sees tweaks to its valvetrain and cooling systems, lowering its power output a bit to 120-horsepower and 214 lb-ft of torque, but increasing its fuel efficiency a great deal.

Added to the powertrain is a start/stop system that keeps the engine from idling when not needed and regenerative braking, which charges a secondary battery that keeps all your goodies running while the engine’s off. The engine has also had its efficiency-robbing power steering pump removed and the rear brakes are now electrically actuated as well. All of this, plus many other small details, adds up to a remarkable 59 miles per U.S. gallon in EU combined testing! Its 10.5 second run to 60 won’t win any drag races, but considering the cost of fuel and pending eco-legislation in the world’s largest markets, we’d imagine that the technologies on this car will go from concept to production in short order.

Some concepts are purely design exercises, while others serve as previews of upcoming production models. It’s rare for one show car to serve as both, but then MINI is unique in the business. The Crossover concept that the BMW subsidiary unveiled here at the Paris Motor Show has a bit of a Dark Knight villain thing going for it. On one side it’s got an unusual door configuration, big show-car wheels and a decidedly conceptual turquoise-highlighted paint scheme. On the other it’s more staid, with conventional doors, a more conventional color palette and an altogether more production-feasible appearance. Up top and inside everything’s all fantasy, however, with the cloth roof and trick glass infotainment system we reported on earlier. Click the thumbnails below to see the MINI Crossover Concept live from the Paris show floor, and the gallery below that for the factory studio shots, and let us know what you think of the two-faced concept car in our comments section.