That's Skewed Up! Why Next Gen NASCAR Racers Are Dog-Tracking In Practice

It never fails: Each year after we award our Car of the Year, Truck of the Year, and SUV of the Year, we're inundated with your letters demanding to know why we didn't include your favorite vehicle. While many readers' theories border on conspiracy, the simplest explanation is that if a vehicle isn't at an Of The Year, you can blame one of three reasons: it wasn't eligible, it wasn't available, or on rare occasions the manufacturer wasn't interested in competing. We expect many of the same letters about our inaugural MotorTrend Performance Vehicle of the Year competition. So in the spirit of transparency, we're opening the curtains to let you know all the vehicles we invited and why they were missing this time around.Before we dive in, let's review our Performance Vehicle of the Year eligibility requirements. Like Car, Truck, and SUV of the Year, contenders must be all new or significantly updated and on sale in all 50 states by January 1 of the award year (2022, in this case) to receive an invitation. Manufacturers must commit to loaning us their vehicles without supervision for two weeks. But then our criteria for inclusion in Performance Vehicle of the Year begin to diverge from our older Of the Year awards.For starters, we had to define "performance vehicle." In our case, it means a road-going vehicle with a focus on speed, handling, and capability over all else. That means no off-roaders this year (though we'll keep the door open on that in the future). Next was the issue of which of a manufacturer's performance vehicles to invite when a model lineup includes many. To keep things simple, when multiple new performance variants exist (as in the case of the Volkswagen Golf GTI and R), we opted to invite the sportiest variant available. And last, our price cap—$150,000 for Car, Truck, and SUV of the Year—was eliminated.Head here for the contenders and here for the finalists to see the list of vehicles that participated in our inaugural Performance Vehicle of the Year competition; you can find out which vehicle took the crown here. What now follows is the list of 26 additional vehicles we invited, and the reasons they didn't participate.2022 Acura NSX Type SThe new NSX Type S certainly appears worthy of inclusion, but unfortunately the hybrid supercar wasn't ready yet (media drives still haven't occurred but are scheduled for February 2022). The NSX will remain on the invite list for the 2023 MotorTrend Performance Vehicle of the Year program.2022 Aston Martin DBX, 2022 Aston Martin ValkyrieWe extended an invite to Aston's new super SUV and its hypercar, but the company declined to participate for undisclosed reasons. Valkyrie production began as our PVOTY program kicked off in November 2021.2022 Audi RS E-Tron GT, 2022 Audi RS3The COVID-19 pandemic hasn't been easy on automakers, forcing many to trim their press fleets and be strategic with where they send vehicles. Unfortunately for us, that led to Audi declining to send us both the RS E-Tron GT (its press vehicles were on the East Coast) and the new RS3, as the media launch for the new sport compact conflicted with PVOTY.2022 BMW i4 M50The BMW i4 M50 wasn't ready in time for our program. We'll extend BMW's first electric sport sedan an invitation for 2023.2021 Dodge Durango HellcatThe hot-selling (and limited edition) 710-hp Durango Hellcat was already out of production by the time our program began.2022 Ferrari 296 GTB, 2022 Ferrari 812 GTS, 2022 Ferrari SF90Ferrari said it didn't have any cars, such as the SF90 we tested previously, stateside to send to Performance Vehicle of the Year. See you next year.2022 Hyundai Elantra N, 2022 Hyundai Kona NHyundai opted not to send either the Elantra N or the Kona N to our program. It held a media drive for both vehicles in California a few days after Performance Vehicle of the Year concluded.2022 Lamborghini Countach LPI 800-4Lamborghini told us it didn't yet have any of its hyper-limited edition 2022 Countachs available for media reviews.2022 Lucid Air Dream Edition PDespite its Car of the Year win, Lucid declined to participate in our Performance Vehicle of the Year program for undisclosed reasons.2022 Maserati Ghibli Trofeo, 2022 Maserati MC20, 2022 Maserati Quattroporte TrofeoMaserati said it didn't have any 2022-model-year vehicles in its fleet. We eagerly anticipate seeing the mid-engine MC20 at our next PVOTY, especially after getting a first drive of it recently.2021 McLaren 765LT Spider, 2022 McLaren ArturaMcLaren said the 765LT was unavailable and that the new Artura was not yet ready. The Artura is a shoo-in for the invite list next year.2023 Mercedes-AMG GT73e 4-DoorIt certainly seemed that the long-rumored hybridized AMG GT73e 4-Door would make its debut before our Performance Vehicle of the Year competition, but it still hasn't been revealed at the time of publication.2022 Pininfarina BattistaWe asked for the multimillion-dollar, Rimac-built electric hypercar, but the Italian design-house-turned-manufacturer said its car would be in Europe with clients.2022 Porsche Panamera Turbo S E-HybridThe refreshed Panamera Turbo S E-Hybrid was unavailable for our testing. Because the Turbo S E-Hybrid supersedes the Panamera GTS on the performance hierarchy, we didn't invite the GTS.2022 Rimac NeveraRimac expressed a great deal of interest in participating but claimed all of its pre-production and engineering cars were tied up in the final production-certification process. The Croatian electric supercar will remain on our short invite list for next year.2022 Subaru WRXThe new WRX simply wasn't ready in time for our PVOTY competition. Media first drives didn't occur until about a month after our program concluded, but we look forward to testing it at next year's program.2022 Tesla Model S Plaid, 2022 Tesla Model X PlaidAlthough Tesla famously no longer has an official public-relations department, a representative for the company responded to our invitation with, "Pass. Thanks." A shame, really, especially considering how the Model S Plaid performed in our previous test.

nissan z Full OverviewProsPowerful and smooth twin-turbo V-6 engineAttention-grabbing retro stylingComfortable cruiser ConsStill uses old platformLimited-slip differential not standard on base modelSome still won't like its front fasciaA Better-Driving ZExterior and Interior DesignIs the Nissan Z Performance the One to Get? Looks good! More details?2023 Nissan Z (Performance) Specifications BASE PRICE $51,015 PRICE AS TESTED $53,210 VEHICLE LAYOUT Front-engine, RWD, 2-pass, 2-door hatchback ENGINE 3.0L Twin-turbo direct-injected DOHC 24-valve 60-degree V-6 POWER (SAE NET) 400 hp @ 6,400 rpm TORQUE (SAE NET) 350 lb-ft @ 1,600 rpm TRANSMISSION 9-speed automatic CURB WEIGHT (F/R DIST) 3,597 lb (57/43%) WHEELBASE 100.4 in LENGTH x WIDTH x HEIGHT 172.4 x 72.6 x 51.8 in 0-60 MPH 4.3 sec QUARTER MILE 12.9 sec @ 107.6 mph BRAKING, 60-0 MPH 111 ft LATERAL ACCELERATION 0.92 g (avg) MT FIGURE EIGHT 25.0 sec @ 0.75 g (avg) EPA CITY/HWY/COMB FUEL ECON 19/28/22 mpg EPA RANGE, COMB 361 miles (est) ON SALE Now Show All

If you were to find yourself beneath a new 2023 Acura Integra—or the mechanically related Honda Civic Si—we sure hope it's not because you were just run over. In that case, you might have more pressing things to worry about than the odd routing of the dual exhausts under the back bumper. But, hey, pretend you're on the ground, under an Acura or a Honda, wondering why there are pipes aft of the exhaust outlets shapes like curly fries. We were similarly curious (having put ourselves on the ground, under an Acura Integra, on purpose) and did some digging with Acura for answers.What Does a Normal Exhaust Look Like?Normally, exhaust piping follows relatively straightforward routes from the engine to wherever the gases are intended to exit—usually the car's rear end. This typically manifests as straight-as-possible piping leading from the headers, which collect gases from each of the engine's cylinders in individual pipes and merge them into one or two outlets that flow into a catalytic converter, to a series of resonators (for shaping or quieting the noise) and mufflers and, finally, the tailpipes.There are a few bends here and there, mostly so the piping can clear things like the rear suspension, the fuel tank, or other obstacles, but conventional wisdom holds that they don't double back on themselves or otherwise make any unnecessary trips side-to-side.How the Acura Integra's Exhaust LooksThe Integra's post-cat piping (aft of the catalytic converters) is a bit different. As we mentioned previously, this setup is nearly identical on the Honda Civic Si, which shares a platform, engine, transmission, and general layout with the new Integra. While the piping follows a relatively traditional central pathway rearward, toward the back of the Integra, via a small tunnel, upon reaching the rear axle area, it splits into a T-shape, with one pipe turning to the right and another to the left.These two pipes bend slightly rearward and lead to small resonators, one per side, before taking a 120-ish-degree bend toward the vehicle centerline, followed by another (by which point the pipes are now flowing toward the front of the car), followed by another bend that points the piping back to the side of the car, and finally a gentler 60-ish-degree bend that spits the exhaust straight back, out from beneath the Integra's rear bumper. Why?According to Honda, those squiggles in each exhaust outlet are, in fact, silencers. They serve essentially the same function as a muffler—Honda calls them "coiled-type silencers"—and their curious shape is highly intentional. While, like everything on a modern vehicle, their shape is somewhat influenced by the allowable space within the bumper and underbody area behind the rear axle, the specific pathway that piping takes plays a crucial role in the surprisingly guttural low-rpm sound the Integra and Civic Si make.By snaking the exhaust piping into that circular route, Honda is lengthening the exhaust pathway, lowering the resonance frequency without using a traditional muffler . Honda engineers tell us that the design as first installed in the Si also emphasizes the 300Hz to 600Hz frequencies "to deliver a more aggressive sound." Skipping the muffler, Honda also was able to achieve that sound with a 27-percent increase in exhaust flow.Good Vibes, Different VolumesThe old Honda Civic Si, you'll recall, featured a central-exit exhaust that spit gases from two tailpipes clustered at the center of the bumper. Compared to the new Si and its Integra sibling, it used two large mufflers in a somewhat unusual configuration: The same central post-cat piping flowed into a T-split, with each pipe flowing into the end of a transversely arranged muffler, one on each side of the car. Gases exited those mufflers about an inch from the inlets, reforming into a T before the piping exited the back of the car.Doing some visual measurements—okay, by the seat of our pants here—the new, muffler-less exhaust setup has more piping. I.e., it's longer, mostly by replacing the old car's length of muffler with pipe, and then spinning that around into loops at each rear corner of the car. It's cool to see the progression of this concept by the engineers, as the new and old setups are clearly somewhat related, only the new version sounds much better, particularly at idle and lower engine speeds. And that's all things being equal, literally. The new and old Si, and by extension, the Integra, utilize the same turbocharged 1.5-liter I-4 engine, and the 11th-generation Civic's platform—again, shared with the Integra—is a modified version of the 10th-gen setup. We didn't note any untoward booming, either, despite the exhaust note being audible in both the Honda and Acura at highway speeds.For higher-rpm duty, Honda and Acura lean on Active Sound Control—in essence, augmented engine noises and, in the Acura, some active sound cancellation via the audio speakers—to amplify good noises and tamp down on less desirable ones. The tuning of these setups are different in each car; the Honda notably amplifies the engine note, more so in its Sport drive mode. In the Acura, we're told that augmentation was turned way down, with the focus pivoted from outright sporty volume to shaping the noises already in play for a more refined effect.Of course, the sounds made by the 2023 Integra or the Honda Civic Si are only small parts of both compact cars' appeal. The Si is clearly sportier than the Integra, with a firmer ride and louder augmented noises and no available automatic transmission (you'll get the best-shifting six-speed manual available this side of a Porsche and like it), while the Integra delivers most of the Si's athleticism with greater overall comfort, refinement, and richer features. Both are fun to drive, attractive small cars. And owners of either one can blow plenty of hot gas about how weird their exhausts are.