BOSTON ( TheStreet) -- If you like your coffee caffeinated, your meat red and your cars big and powerful, you'll love these vehicles. All have plenty of cargo space, tons of horsepower -- and the worst mileage of any mainstream 2013 model sold in America. "I work with a whole bunch of people that buy these cars all the time -- and it's all about performance and vehicle size, pure and simple," says Phil Reed of auto information site Edmunds.com. "There's almost a direct-line comparison between high performance, car size and low fuel efficiency." Reed says cars with poor miles-per-gallon efficiency estimates can make financial sense if your job or family responsibilities involve toting large numbers of people or tons (literally) of cargo. "If you've got a big family and you can fit them all into a Cadillac Escalade, that can be more fuel efficient" than taking two cars, he says. He adds that lots of consumers consider a low-mpg vehicle's roominess and performance worth the added costs over what they'd spend to run a high-efficiency 2013 model. "Some people clearly think it's a good tradeoff, because a lot of these vehicles sell well," Reed says. "However, you do see a really sharp drop-off in demand on these cars when gas prices spike." Here's a look at the five worst-mileage 2013s that are widely available in the U.S. market and priced at $100,000 or less. Listed in order of combined city/highway mpg, the rundown below includes all 2013 models that manufacturers have released U.S. Environmental Protection Agency fuel-efficiency estimates for as of late January. "Base price" refer to the manufacturer's suggested retail price (excluding destination and handling charges) for the least-expensive model with the mpg rating specified.
Combined mpg: 14 mpg city/highway
Base price: $32,120 Expect to use a titanic amount of gasoline if you buy a Titan, as this brawny pickup truck from Nissan ( NSANY) gets just 12 mpg/city and 17 mpg/highway when outfitted with four-wheel drive. That's mostly because the Titan combines a 317-horsepower V-8 engine with a cargo bed that's more than 7 feet long, plus a passenger cabin that's outfitted with room for up to six people. Add in optional 20-inch wheels and available BF Goodrich Rugged Trail all-terrain tires and you wind up with a massive, low-mpg vehicle that can have a curb weight as high as 5,556 pounds. Of course, all of that bulk gives the Titan great off-road capability, plus as much as 9,500 pounds of towing capacity. Some Titans even have 125.6 cubic feet of passenger space -- about 25% more than you'd get with a Nissan Altima midsized sedan.
Combined mpg: 14 mpg city/highway
Base price: $49,100 Sure you'll pay a fortune to fuel this behemoth, but how many drivers can say their cars have an official "maximum wading depth"? Land Rover says the LR4 sport utility vehicle can operate in water as high as 27.56 inches -- just one of many off-road conditions that this luxury SUV can handle with ease. "Even though few drivers will ever use a Land Rover for anything more complicated than going out to buy a latte, the vehicle actually has a lot of very serious off-road technology," Reed says. "Land Rover has its roots in off-roading, and the company works hard to preserve that." That's why the model comes with four-wheel drive, a 375-horsepower V-8 engine and a special Terrain Response system that lets you optimize performance for five different driving conditions -- grass, gravel, snow, mud or sand/rocks. All of that gives the LR4 the ability to go from 0 to 60 mph in 7.5 seconds, achieve a 121 mph top speed and tow up to 7,716 pounds. At the same time, the LR4 features and 11-speaker Harman Kardon ( HAR) stereo and other high-end accoutrements you'd expect in a British luxury vehicle. Optional third-row seating means the vehicle can even accommodate up to seven passengers. Unfortunately, all of those performance and comfort features give the LR4 a 5,623-pound curb weight. Add in the effects of a gas-guzzling engine and four-wheel-drive system and you get a vehicle that gets just 12 mpg/city and 17 mpg/highway.
Combined mpg: 14 mpg city/highway
Base price: $76,195 This Land Rover gets the same 12 mpg/city and 17 mpg/highway as its cousin the LR4, but has even more engine power and luxury features -- all of which add curb weight. The five-passenger Sport Supercharged clocks in at 5,816 pounds, or 193 pounds heavier than the already-brawny LR4. The Sport Supercharged comes standard with a bigger 510-horsepower supercharged V-8 engine, though, plus high-performance Brembo brakes and other upgrades that allow it to go from 0 to 60 mph in 5.9 seconds. The SUV can also run as fast as 140 mph, as well as tow the same 7,716 pounds an LR4 can.
Combined mpg: 14 mpg city/highway (both models)
Base price: $88,850 (X5 M) and $92,900 (X6 M) Suburban moms and dads who want to channel their inner Mario Andretti will love these two crossover SUVs, which can each reach 155 mph. "These premium SUVs are really good, capable vehicles that are loaded with technological and comfort features," Reed says. Both models come with twin-turbocharged 555-horsepower V-8 engines that can go from 0 to 60 mph in 4.5 seconds. They also feature BMW's xDrive intelligent all-wheel-drive system, 6-speed M Sport automatic transmission and special sensors that control the SUVs' stabilizers and shock absorbers to ensure ultra-high performance. In fact, the only major design difference between the two is that the X6 M (shown above) has a sloping roof and smaller back seat. That improves aerodynamics, but means the X6 M can only hold four passengers to the X5 M's five. What's not different is that both models weigh a lot -- more than 5,300 pounds each -- and get crummy gas mileage. The EPA rates each vehicle at 12 mpg/city and 17 mpg/highway.
Combined mpg: 13 mpg city/highway
Base price: $43,630 Ford ( F) designed this massive pickup truck primarily for off-road driving -- which is what you should stick to if you buy one, because it offers everyday users terrible fuel efficiency. Whether you buy the two-door SuperCab or four-door SuperCrew version, the Raptor gets just 11 mpg/city and 16 mpg/highway. That works out to 13 mpg combined city/highway -- the worst rating for any mainstream 2013 sold in America. The Raptor has such low mpg because it's loaded with all sorts of inefficient off-road equipment, from a 411-horsepower V-8 engine to heavy skid plates to protect the truck's undercarriage from rough terrain. "With the SVT Raptor, Ford took a standard F-150 and turned it into a super-off-road pickup truck," Reed says. "You can essentially go tearing across the landscape at high speeds with one and trample everything in your path."