In the past two decades almost every performance-focused car on the market has inflated in size, which goes against the very ethos of the performance car. Colin Chapman, founder of Lotus Cars, famously said, “Adding power makes you faster on the straights. Subtracting weight makes you faster everywhere.” Chapman may have coined the phrase, but every designer who has put pencil to paper with intentions to draw up a sporty car can’t deny those words.
Of course the NHTSA has tightened its grip on car design by introducing more stringent requirements and restrictions governing every car that hits the road, such as larger crumple zones and massive pedestrian crash clearances. The latter produces the biggest effect on overall design and weight. A minimum distance of 0.8 inches is required between the underside of the hood and the highest hard point in the engine bay. If that seems like a quick fix, it’s not. Once the general shape of the front of the car has changed, it has a trickle down effect through the rest of the car. The higher hood means a higher windshield; the higher windshield means a higher roof; the higher roof means a higher beltline and a higher beltline means bigger doors, bigger wheel arches and bigger wheels. More metal means more weight.
A single car proves a car company can keep a car small and exciting: The Mazda Miata.
BMW are the biggest culprits in taking an iconic sporty sedan — specifically the 3-series — and inflating it to comical proportions, all the while insisting it has the DNA of the original. The third generation of the 3-series, made in the ’90s, had a 106 inch wheelbase, was about 174 inches overall, and weighed around 3000 lbs. The current production 3-series has a wheelbase of 115 inches, measures 186 inches overall and weighs in at 3571 lbs. For further context, this year’s 3-series has a longer wheelbase and weighs around the same as the previous generation 5-series. But, take a look in any direction in the segment: at Audi, Mini, even the Acura NSX: the size and weight gain seems contagious. Sure, each of theses cars’ newest iterations are faster than the past generations, despite the weight gain, but each new version has gotten a bump in power. The first generation 3-series had 89 horsepower, the current generation has over 300.
If the reason for some of the the last century’s most iconic sports cars becoming bloated is for safety, than it would be hard to argue. Safety should come first. After all, we’re out there to have fun and enjoy the drive and it’s better to arrive late than not at all. But if there’s a shining example of a company can keep a car small and exciting it’s the Mazda MX-5 Miata. The newest generation Miata is only one inch longer than the original and is actually lighter than the second generation Miata. Yet it’s still a safe car to drive down the highway. Mazda went so far as to lower the horsepower of the newest generation Miata, just so they could keep the right power-to-weight-ratio, which is the crux of any true performance car. BMW seems aware of their misdeeds, insofar as the M2 is, dimensionally, almost dead-ringer for the E46 M3.
So it is possible, when you’re not chasing volume sales or that extra inch of legroom every year, to engineer your way around the safety regulations and make a fun, quick car. Mazda has gone great lengths to keep MX-5’s footprint close to the original and the scale tipping to the minimal. And unsurprisingly, the Miata has gained universal praise. There are bigger cars out there that move quicker than the Miata in straight line, but they also have hundreds more horsepower to move the extra metal. The extra heft just ruins performance in turns, destroys tires faster and necessitates burning more fuel. Colin Chapman knew it, Mazda knows it, you should know it: size matters.