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2019 Mazda MX-5 Miata First Drive Review | More power is the icing on top

SAN DIEGO — When Mazda announced that the 2019 Mazda MX-5 Miata was getting a serious increase in power, I was both excited and nervous. I was excited because more power is always exciting, and it was no insubstantial increase. At 181 horsepower, it's the most powerful production Miata ever offered, beating out turbocharged Mazdaspeed Miata's 178 horsepower. Plus it has more revs to play with. But what had me worried was whether this power would mess up the friendly, playful character of the Miata. The 155-horsepower 2.0-liter engine is just about perfect, almost universally loved by the Autoblog staff and other reviewers, with good midrange torque and short gearing that always made it feel quick in nearly every rev range. It felt like the right amount of power for the chassis, too. There was just enough to get it loose without working too hard, but it wouldn't spin you around unexpectedly. I could imagine a couple of ways the new engine could affect that sweet balance, too. A bit too much power could risk some of the Miata's accessibility and predictability. It might become more serious and less fun-loving. I also feared that in pursuit of a higher redline and more horsepower, the low-end of the rev range might become painfully slow. Honda owners know this feeling whenever their VTEC-equipped screamers drop out of the aggressive cam profile, and the Toyota 86 and BRZ suffer from an awful lack of torque right in the mid-range that doesn't recover until nearly redline. All of this was on my mind when the assembled reviewers were briefed by Mazda engineers about the car. It started out like most presentations, with a brief rundown of the goals of the car and what Mazda has done with the model so far. Then came a chart showing the power curves of the NC, current ND, and the 2019 model, and my fear of a loss of low-end grunt dissipated. The amount of power and torque over engine speed is nearly identical between the old and new ND Miatas right up to around 4,500 rpm. And then from there, the 2019 continues making more power all the way to its 181-horse peak at 7,000 rpm, 500 rpm higher than the previous model's redline. This was a good sign. Mazda managed to get these gains with no sacrifices through many small upgrades. The throttle body is wider with a slimmer throttle plate, the intake manifold has longer runners and dual paths, and the intake ports are larger.

Honda, Mazda, Mitsubishi, Mercedes also under diesel emissions scrutiny

The controversy over Volkswagen's diesel emissions scandal isn't limited to the US. In Europe, where diesel engines are far more popular, the issue is shining a harsh light on the NEDC emissions test. As already known, the evaluation does a poor job of reflecting real-world production of NOx, and it appears a significant number of automakers are affected. The Guardian in the UK has been reporting on real-world test results from a company called Emissions Analytics. After the latest round of checks, vehicles from Mercedes-Benz, Honda, Mazda and Mitsubishi were found to generate far more NOx than they should. The newspaper also published similar results for Renault, Nissan, Hyundai, Fiat, Volvo, Jeep, Citroen, VW, and Audi. On average, the figures are about four times over the limit of producing the pollutant. Unlike VW and its defeat device, these automakers aren't actually breaking the rules. The vehicles perform up to the NEDC lab test for emissions, but those results simply aren't translated to the street. "The VW issue in the US was purely the trigger which threw light on a slightly different problem in the EU - widespread legal over-emissions," Nick Molden from Emissions Analytics said to The Guardian. A big fight to decide the future of this issue appears to be on the horizon. Automakers claim that they can't meet the next round of tightening emissions regulations and are asking for compromises. Although, spokespeople for Mercedes and Honda told The Guardian that the brands would be in favor of the stricter rules. Meanwhile, some European governments began backtracking their support of diesels well before this scandal came to light. The added scrutiny certain hasn't helped the future of the oil-burner. Related Video:

2016 Mazda MX-5 Miata will rock 2.0L SkyActiv engine in US, 1.5L elsewhere

Let the speculation finally end - we know what will power the next-generation 2016 Mazda MX-5 Miata, and it's not turbocharged. The US model will get a SkyActiv 2.0-liter engine and six-speed manual, while models in the rest of the world have a 1.5-liter engine, confirming earlier rumors.
Unfortunately, Mazda isn't letting loose how much power either of these mills make just yet. For sake of comparison, the current SkyActiv 2.0 in the Mazda3 produces 155 horsepower and 150 pound-feet of torque, and the 1.5-liter in the UK (and elsewhere) has about 99 hp and 110 lb-ft of twist. However, the current Miata produces 167 hp and 140 lb-ft.
But fret not droptop fans. The company's brochure from the 2014 Paris Motor Show confirms, "all available drivetrains have been specially tuned for the all-new MX-5," which at least hints at the possibility of more performance. Also, even if the numbers remain untouched, the new Miata should feel even more sporting on the open road. That's because Mazda says the new model weighs in the neighborhood of 2,200 pounds; with that in mind, the 2016 car would boast around 14.19 pounds per horsepower versus 14.85 lb/hp in the present MX-5. Progress!