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Analysts say Americans' waistlines may keep us from cho... Analysts say Americans' waistlines may keep us from choosing small cars. (Adam Morath, AOL Autos)
Karen Steelman, a stay-at-home mom from Athens, Ga., has tried to like small cars. She read plenty of reviews, kicked their tires, and has even taken a few test drives.

But none of them made her feel safe. And none of them made her feel comfortable.

When she tested the cars, Steelman had a body mass index of about 37 – seven points above the obesity mark. She's among a growing number of Americans who feel they are too big to comfortably drive a small car.

"I want to be environmentally friendly, but unless I am in an SUV these days ... I find no pleasure or comfort in driving," she said.

Automakers have long tried to figure out how to get Americans to buy smaller cars. But with obesity rates climbing, at least one analyst said there's little point in trying.

Growing waistlines simply prevent a lot of U.S. drivers from feeling comfortable or secure in smaller cars. Unless the entire country goes on a diet, said Dan Cheng, vice president and partner at business consulting firm AT Kearney, we may be destined to keep driving big cars no matter how much a gallon of gas costs in the future.

Cheng said the number of light trucks – a segment of the car market that includes SUVs, minivans, and pickup trucks – has increased steadily since the 1970s. So has the percentage of adults in the U.S. who are classified as obese.

The number of obese people in the U.S. is expected to increase from 40 percent in 2011 to about 43 percent in 2018, Cheng said. Cheng predicted that will keep almost half the population from even considering a small car except for purely economic reasons as small cars tend also to be cheaper than big cars or SUVs.

TOP 5Most Popular SUVs On AOL Autos
Calculating the "real" obesity rate in the U.S. is a little tricky. Cheng's 40 percent rate is at the high end of estimates. The Center for Disease Control said the overall self-reported obesity rate in the U.S. is 26.7 percent, with nine states reporting obesity rates over 30 percent. In any case, the rate is nowhere close to the 15 percent rate the CDC considers to be a healthy obesity rate.

Small cars have made up 22.6 percent of the U.S. car market so far this year. Back in 2008, small car sales made up about 28 percent of the market, back when gas spiked over $4 a gallon.

Smaller cars and alternative fuels are critical to President Obama's plan to reduce the nation's dependence on foreign oil. The President in 2011 promised to cut oil imports by a third by 2025. To do that, the country will have to slash its petroleum use.

Virtually All Cars and SUVs are Becoming Much More Fuel Efficient

Today's SUVs and mid-sized sedans and crossovers are becoming more fuel efficient than their predecessors of a decade ago. But it's smaller cars, which tend to be the most fuel efficient of all because they are smaller and lighter, that are critical to automakers meeting toughening fuel economy standards imposed by Congress.

Automakers have to meet a Congressional mandate to have fleet averages of 35 mpg by 2016.

Some of the most fuel-efficient small vehicles on the road get over 100 mpg, like the 2014 Chevy Spark EV. But that is a teeny tiny car that seems best suited for a herd of clowns, not oversized Americans. The most fuel-efficient pickup truck is the Toyota Tacoma, and it gets 23 mpg, according to the government site fueleconomy.gov.

Ironically, there are a few small cars that are designed to be extra roomy inside making them noteworthy for their interior spaciousness, if not for exceptional fuel economy. The Honda Fit, Nissan Cube and Versa, and Scion xB all have ample space up front, with good headroom and comfortable space for the driver. The Volkswagen Beetle has long been a favorite among large people because of its easy egress and excess headroom.

Of those cars, only the Fit and Versa get above 30 mpg, and only just barely. In order for automakers to reach a 35 mpg fleet average by 2016, automakers need to boost those ratings closer to 40 mpg.

Resources For the Future, a Washington D.C. think-tank that explores environmental and energy issues, said they've found a link between obesity and large vehicle sales, too. They say policies that reduce obesity can also reduce fuel consumption, because smaller people drive smaller cars.

Automakers like Ford are trying to design interiors that keep the bigger population comfortable. Elizabeth Baron, Ford's technical specialist for virtual reality and advanced visualization, said the automaker has recently updated its database of model human sizes to incorporate the growing number of obese adults.

Automakers Looking at Console and Roofline To Make More Room

To keep drivers comfortable, her team focuses on a few key areas: The center console, seat controls on the left, and head room. If the center console is too large, it can press into peoples' bodies. And the storage space in the console can be awkward for larger people to use. Seat controls can also be difficult to reach. Also, because obese drivers sit higher in their seats, they often feel squeezed if the roof line is too low. Automakers also need to be aware of where they place sunroof controls, because those can get in the way.

Robert Dean Cole, from Kenosha, Wis., is 6 foot 7 inches and 240 pounds, and his six-year-old son is nearly 5 feet tall.

"Obviously, little cars are not going to be in our future," he said.

While he'd like to own a car with better gas mileage, he said he can barely fit behind the steering wheel in most of them.

"And even if I could actually fit under the steering wheel of the car my next worry would be surviving a car accident," he said. "Good chance I won't be surviving due to my size."

So he recently purchased a Ford F-150 – one of the biggest vehicles in the U.S. It is also the most popular.

Jake Fisher, senior engineer at Consumer Reports, said it's more that fear of being crushed that keeps most people away from small cars. Fisher has test driven a Fiat 500 for Consumer Reports, and he can fit his entire family in the car comfortably. They've enjoyed using it for around town.

But out on the highway, when they encounter some trucks, being in the small can feel a bit sketchy, he said. "When you drive up next to a Suburban, it's a little intimidating," Fisher said.

Consumer Reports, in fact, last year came out with a list of "Best Cars for Larger Drivers," to spotlight their recommendation to auto companies to redesign seats and seat-belts for reasons of both comfort and safety. The consumer advocacy organization, which tests cars, recommended several cars for their roomy driver position and easy access. AOL Autos editors augmented that list with a few selections and can be seen in the gallery below.

Still, because SUVs have been so popular for so long, many consumers won't consider small cars out of fear they will come up on the short end of a one-on-one collision with one. Also, auto designers say many drivers, especially women, have come to like the elevated, commanding seating positions that come with SUVs. This attitude is especially prevalent in rural markets where pickups and SUVs make up a larger percentage of overall vehicles than in the cities and suburbs.

But the idea that bigger is safer is often not true. Many small cars get as good or better crash ratings than larger vehicles because automakers have engineered many safety features into small cars precisely to make up for their lack of mass in a collision with a larger vehicle. The 2013 Honda Civic got the highest crash test ratings from the Insurance Institute for Highway Safety and the four-door Civic has a 4-star crash rating from the Federal government, as listed at www.safecar.gov, better than the Ford F-150 pickup truck, and better than some larger corossovers and SUVs like the Toyota RAV4 (which also got four stars). The Scion TC, built by Toyota and a small car, earned a 5-star rating.

It's important to research each car under consideration for purchase because size of vehicle doesn't always tell the whole safety story. But the vehicle does need to fit in the first place when a customer sits behind the wheel.

Bottom Line

A vehicle needs to fit its occupant, and clever design and engineering can overcome size limitations. As any large person who has test driven cars can attest, the Honda Fit and VW Beetle are roomier for the driver than some larger vehicles like Ford Taurus or Nissan Maxima.

Automakers under pressure to achieve better fuel economy across their lineup may need to give greater consideration to making small cars more comfortable for average Americans. Those that place sleek design over practical will lose customers and consideration.

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    • 1 Second Ago
      • 1 Year Ago
      I'm 6'3", about 325 lbs, and drove a Geo Metro for years. Comfortable, highly willing, 35 MPG, started in -30F temperatures, I drove that thing for 110,000 miles, and would probably still have it if it hadn't cracked on of its three cylinders. It carried me and a passenger and several 6' flat-pack bookcases home from Ikea, all inside the vehicle. The idea that it was "too small" is silly to the point of ludicrous.
      • 3 Months Ago
      My BMI is the same as the woman in the article's, and I'm perfectly comfortable driving my Ford Fiesta. Sorry, you can't blame Americans' taste in cars on their size.
      • 2 Years Ago
      This is just the latest excuse to justify our wasteful lifestyle. "I can't fit in a small car", try losing some weight! If Jeremy Clarkson can fit comfortably in a Ford Fiesta at 6' 4", then there's no valid excuse you can use. And the whole excuse of "I'll never survive being hit by a tractor trailer" is a myth perpetuated by the auto industry. You won't survive being hit by a tractor trailer in ANY car. An eight thousand pound SUV has no chance against 40 tons. As Americans we're still clinging to this idea that "size=quality". We don't want to spend $15,000 on a Ford Fiesta, but we'll spend $50,000 on an Escalade under the false pretense that it's "safe", when the real reason is you feel insulted at the idea of driving a smaller car, because you'll lose status among your friends.
      • 3 Years Ago
      how about people who are 6ft 8in. Sometimes it's not about being fat, its about these crappy little cars being too SMALL
      • 3 Years Ago
      I doubt that the "waistline" actually has much to do with this. Americans are getting taller on average, and small cars typically do not provide good legroom for people with long legs.
        • 3 Years Ago
        According to the CDC Americans are on average only 1 inch taller than we were in 1960. Meanwhile we're also 25 pounds heavier. It's not our height, my friend.
      • 3 Years Ago
      I agree with the article.I am 6'5" ,220 lbs. and I cannot afford the big cars that I fit in.I looked at cars two years ago.I finally bought a Toyota Camry because it had leg , head and body room.I looked at mid -sized and small cars only.All the small cars were so tight it was a joke.The small cars like a Kia model are built for someone 5'6" or smaller and on the thin side.I got into a little Kia and drove it 2 blocks. I thought I would die from being totally cramped.A long trip would be out of the question.
        • 3 Years Ago
        rossand sheila- I also bought a Camry about 5 years ago. It was an old one but a good one. 110K on the odometer and now has only 166K on it. I am surprised how much leg room is in this car. The complaint I have with most small cars is not length of leg room, but width. I don't like it when I feel like my feet are stuffed in a shoe box! I tried one of those small Cadillacs and couldn't wait to get out of it; it felt like a jet fighter cockpit. Incredibly cramped.
      • 3 Years Ago
      I myself am a big guy, 6'2" & over 250(too far over currently), but I have always sort of liked small cars, just as long as I have leg room & don't hit my head on the roof. My bulk has rarely been a issue, & I like the feeling of a "cockpit" that smaller cars give me. What I don't like about small cars is their ride height. If I could find a small car that is lifted 6 inches, that would be perfect.
      • 3 Years Ago
      I've always driven mustangs...good sturdy frame and great mileage. And if you can't fit in any car, you are too fat. Lose weight.
      • 3 Years Ago
      Try a Honda FIT You won't believe the room!!!!
      • 3 Years Ago
      WRONG WRONG WRONG! People like sitting up high...equal to or higher than other vehicles. Little cars that don't allow drivers to see over the vehicles around them have less time to react. Not to mention the feeling of being engulfed by all the bigger vehicles on the road.
        • 3 Years Ago
        The small cars sit you up just as high as the larger sedans now. For someone, who likes the aporty feel, this is annoying.
      • 3 Years Ago
      Cars are being made smaller to force people to get smaller (diet). This is part of Obama's world domination plan. He wants everyone to accept his rotten health plan. He thinks that if everyone is smaller they will be healthier! Like some have said, they are well over 6'-4" tall or taller. He forced us to save GM and now it's "Government Motors" instead of General Motors. You would think that they would be able to make a car that is road worthy for under 5K. Instead we are offered cars that are akin to a fancy go- cart.
      • 3 Years Ago
      the biggest problem I find in newer cars is the seats. There is no padding in the middle of the seat where you actually put your butt so it pinches off your leg nerves. I find myself hanging from the srat sides on my hips and feeling every bump in the road.. Being 6' 4", I have to use a thin pad to make up for this and keep from hitting the roof. Curved seat backs hurt because my kidneys push into the sides. What ever happened to bench seats with springs and padding. JRC
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