Edmunds: Some guidance on finding the best 'American' cars

This photo provided by Acura shows the 2017 Acura RDX, which ranks No. 9 in the Made in America Auto Index and is an Edmunds pick for a luxury SUV. The RDX has 78.5 percent domestic content. Acura builds the RDX in Lincoln, Ala. Production shifts to East Liberty, Ohio, in fall 2017. (Courtesy of Acura via AP)
This photo provided by Subaru shows the 2017 Subaru Outback, which ranks No. 48 in the Made in America Auto Index and is an Edmunds pick for a wagon. The Outback has 42.5 percent domestic content and is built in Lafayette, Ind. (Courtesy of Subaru of America Inc. via AP)
This photo provided by Honda shows the 2017 Honda Odyssey, which ranks No. 12 in the Made in America Auto Index and is an Edmunds pick for a minivan. The Odyssey has 76 percent domestic content and is built Lincoln, Ala. (Courtesy of American Honda Motor Co. Inc. via AP)
This photo provided by Ford shows the 2017 Ford F-150, which ranks No. 2 in the Made in America Auto Index and is an Edmunds pick for a truck. The F-150 has 85 percent domestic content. (Courtesy of Ford Motor Co. via AP)
This photo provided by Toyota shows the 2017 Toyota Camry, which ranks No. 9 in the Made in America Auto Index and is an Edmunds pick for a sedan. The Camry has 78.5 percent domestic content and is built in Georgetown, Ky., and Lafayette, Ind. For the 2018 Toyota Camry, production shifts entirely to Georgetown. (David Dewhurst Photography/Courtesy of Toyota Motor Sales USA Inc. via AP)
This photo provided by General Motors Co. shows the 2017 Chevrolet Corvette, which in its automatic transmission version, ranks No. 3 in the Made in America Auto Index and is an Edmunds pick for a performance car and a convertible. The Corvette has 82 percent domestic content and is built in Bowling Green, Ky. (Courtesy of General Motors Co. via AP)
This photo provided by Ford Motor Co. shows the 2017 Ford Expedition, which ranks No. 5 in the Made in America Auto Index and is an Edmunds pick for an SUV. The Expedition has 81 percent domestic content and is built in Louisville, Ky. (Courtesy of Ford Motor Co. via AP)
This photo provided by Honda shows the 2017 Honda Pilot, which ranks No. 9 in the Made in America Auto Index and is an Edmunds pick for a crossover. The Pilot has 78.5 percent domestic content and is built in Lincoln, Ala. (Courtesy of American Honda Motor Co. Inc. via AP)
This photo provided by General Motors Co. shows the 2017 Chevrolet Volt, which ranks No. 30 in the Made in America Auto Index and is an Edmunds pick for a hatchback. The Volt has 61 percent domestic content and is built in Detroit. (Jim Fets Photography/Courtesy of General Motors Co. via AP)

"Buy American" is a slogan that's getting a lot of attention lately, but it can be tough to put into practice when you're car shopping.

A U.S.-built 2017 Chevrolet Colorado with a diesel engine and a manual transmission might sound American through and through. But in that configuration, the Colorado is a worldly truck. The diesel engine is built in Thailand, and the transmission is made in Brazil. In other words, a U.S. automaker's badge isn't a sure marker of an American car.

American content in cars has been falling for several years, says Frank DuBois, a global supply chain expert and a professor at the Kogod School of Business at American University. DuBois is the creator of the Made in America Auto Index , which since 2013 has ranked automotive "American-ness" in a time of increasingly globalized car-making.

In 2013, the 30 most American vehicles in the index had an average of 77 percent "domestic" content (meaning from the U.S. and Canada; the U.S. labeling law doesn't consider Mexico a domestic source). By 2017, that figure had slipped to 72.5 percent.

If you don't want to pore over window stickers one by one to find the most American cars, here's a helpful list from car-buying website Edmunds: 10 excellent vehicles that all are U.S.-built, with significant domestic content. Half are from U.S.-based carmakers. The rest are from carmakers that are based in Japan and build cars in the U.S.

Edmunds began the list with its 2017 New Car Buying Guides , which highlight its reviewers' top picks by vehicle type. Then Edmunds put those selections through the Made in America Auto Index. It ranks vehicles based on seven factors, including:

— Where the car was built.

— Where the manufacturer is headquartered.

— Where research and development take place.

— Where the engine is built.

— Where the transmission is built.

— Where the body, chassis and electrical components are made.

A rank of 1 is the highest possible for a vehicle. If you're shopping for a 2018 car, you'll have to wait several months for rankings. DuBois can't start work on the next index until later this year, when carmakers report vehicle content to the National Highway Traffic Safety Administration.

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CONVERTIBLE & PERFORMANCE CAR

2017 Chevrolet Corvette

Made in America Auto Index rank: 3

Total domestic content: 82 percent

The 2017 Chevrolet Corvette is a unique slice of Americana that can compete on the world stage. This rank is for the Corvette with an automatic transmission. The manual transmissions for this car come from Mexico, and cars so equipped come in at 14 in the index.

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COUPE

2017 Ford Mustang

Made in America Auto Index rank: 12

Total domestic content: 76 percent

The 2017 Ford Mustang is civilized and packed with modern tech, but it holds on to the American swagger that has defined it for 50 years. This rank is for the Mustang with an automatic transmission. The manual transmissions for the car come from Mexico or China and cars with them rank 20 in the index.

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CROSSOVER

2017 Honda Pilot

Made in America Auto Index rank: 9

Total domestic content: 78.5 percent

The 2017 Honda Pilot has lots of space, a versatile interior and even a bit of off-road capability, which makes it a great all-around family vehicle.

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HATCHBACK

2017 Chevrolet Volt

Made in America Auto Index rank: 30

Total domestic content: 61 percent

The Chevrolet Volt is a five-seat hatchback sedan that also happens to be a plug-in hybrid, capable of going more than 50 miles on all-electric power before switching to gas.

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LUXURY

2017 Acura RDX

Made in America Auto Index rank: 9

Total domestic content: 78.5 percent

This stylish 2017 Acura crossover is an Edmunds favorite, thanks to its fuel-efficient and powerful V6, comfortable interior and long list of standard features.

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MINIVAN

2017 Honda Odyssey

Made in America Auto Index rank: 12

Total domestic content: 76 percent

Few minivans are better than the 2017 Honda Odyssey when it comes to ample space for passengers and luggage and kid-friendly features.

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SEDAN

2017 Toyota Camry

Made in America Auto Index rank: 9

Total domestic content: 78.5 percent

The 2017 Toyota Camry is a midsize sedan that offers a spacious interior, a refined ride quality, and all the safety features you expect in a family car.

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SUV

2017 Ford Expedition

Made in America Auto Index rank: 5

Total domestic content: 81 percent

The 2017 Ford Expedition is one of our top recommendations for a full-size SUV, thanks to its massive interior, composed ride and substantial towing capability.

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TRUCK

2017 Ford F-150

Made in America Auto Index rank: 2

Total domestic content: 85 percent

Perennially the best-selling vehicle in the U.S., the F-150 has a diverse lineup of features, packages, engines and bed configurations to suit the needs of just about any kind of truck buyer.

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WAGON

2017 Subaru Outback

Made in America Auto Index rank: 48

Total domestic content: 42.5 percent

The Outback is a midsize wagon with standard all-wheel drive and optional high-tech safety features that make it a great all-weather family vehicle.

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EDMUNDS SAYS: The definition of an "American car" has become harder to pin down over the years, but we have some guidelines that will help you figure out the true origin of some top picks in their class.

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This story was provided to The Associated Press by the automotive website Edmunds . Carroll Lachnit is a consumer advice editor at Edmunds. Twitter @clachnit

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Related links:

Edmunds New Car Buying Guides http://edmu.in/2uiP8VW

Edmunds: When You Shouldn't Sleep on a Car Deal http://edmu.in/2gOEFrh

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