The reliabilities of all model years of the Jeep Grand Cherokee and the Dodge Durango can be measured using the PPMY index which is defined as problems reported per thousand vehicles per Year: Show
PPMY = P / S / Y * 1000, where P = total problems reported during the life of a particular model year; S = total units sold of the model year; Y = years since the model year has been on the market (the age of the vehicle). The index can also be written as: PPMY = [Problems / (Sales/1000)] / Age. A bigger PPMY index indicates less reliability of the given model year cars. For example, the most problematic model year of the Jeep Grand Cherokee is the 2012 Jeep Grand Cherokee. This model had a total of 31,706 cars sold in the United States and had 1,370 problems reported as of today. The PPMY index can be calculated as: PPMY = [Problems / (Sales/1000)] / Age = [1,370 / (31,706/1000)] / 6 = 7.20. Similarly, the most problematic model year of the Dodge Durango is the 2011 Dodge Durango. It had a total of 16,949 cars sold in the United States and had 891 problems reported as of today. The PPMY index of this model can be calculated as: PPMY = [Problems / (Sales/1000)] / Age = [891 / (16,949/1000)] / 7 = 7.51. The complete results for the recent model years of Jeep Grand Cherokee and Dodge Durango are shown in Table 1 and Table 2, respectively. Table 1. Compare Reliability Across Jeep Grand Cherokee Model YearsGrand Cherokee Table 2. Compare Reliability Across Dodge Durango Model YearsDurango To study the aggregated reliabilities of the Jeep Grand Cherokee and Dodge Durango vehicles, we use the PPM index which is defined as: PPM = Total Problems / (Total Sales/1000), Where the total problems in the equation is the total number of problems reported for all model years listed in Table 1 (Jeep Grand Cherokee, 2002 to 2017) and Table 2 (Dodge Durango, 2002 to 2017); The total sales in the equation is the the total number of vehicles sold in the United States for all model years in Table 1 and Table 2. The results are shown in Table 3. It wasn’t that long ago when Dodge was a truck powerhouse. Sure, things have been relatively quiet over there since Chrysler spun off its truck division into Ram in 2010, but it still has a ringer in the full-size Durango SUV. And yes, this generation has been on the market since 2011, and while it can’t hold a candle to the best-selling Ford Explorer — 129,107 sales versus 38,701 — it’s still one of the best-looking, versatile, and performance-focused people movers on the market. With or without the Ram lineup, the Durango should be enough to keep Dodge’s reputation as the home of Fiat-Chrysler’s big, rugged SUV, right? Well, not quite. The Durango has some stiff in-house competition, and its name is the Jeep Grand Cherokee. In fact, the Jeep is stiff competition for everybody; it’s just behind the Ford in sales, moving 100,737 units this year, and with Jeep growing faster than any American automaker, that isn’t likely to change anytime soon. And while it’s just as old as the Durango (though both models benefited from a 2014 update), the Grand Cherokee’s something-for-everybody versatility and that go-anywhere reputation that comes with the Jeep brand have helped it outpace its platform-mate, which is viewed as more of a one-trick pony.  The Durango has long gotten the “underrated” tag from we auto scribes, yet Americans would rather have the Jeep by a two-to-one margin. But how fair is that, and how different can FCA’s platform-sharing SUVs really be? That’s what we’ll tackle this week in this installment of Buy This, Not That. Tale of the tapeThe Jeep Grand Cherokee has been a constant presence in American suburbs ever since Bob Lutz drove the first one through a pane of glass in 1992. Back then, it did wonders to revive Chrysler after one of its many financial crises; nearly 20 years later, the current Grand Cherokee helped do the same thing. Starting at the $29,995 rear-wheel drive Laredo model, you get a 3.6-liter Pentastar V6, which is good for 295 horsepower, 260 pound-feet of torque, and genuine off-roadability. From there, you can option your Grand Cherokee in six other trims, including limited editions. From the Limited up (slotting just above the Laredo), engine choices become a 3.0-liter EcoDiesel V6 (which is good for 30 miles per gallon on the highway), and the 5.7-liter Hemi V8, good for 360 horsepower and 390 pound-feet of torque. In the real world, that means you can tow a class-leading 7,400-pound boat with it and not have to worry about a thing. If the Grand Cherokee has an achilles heel, it may be its price; sure, it’s plenty attainable in lower trims, but fully-optioned, you could drive off in a Summit or limited edition High Altitude model that comes dangerously close to the $60K mark. Regardless of whether your Grand Cherokee is just comfortable or downright opulent, there’s spacious seating for five, leather-trimmed thrones, and available Quadra-Trac four-wheel drive. Despite not having the word “grand” in its name, the Durango is actually larger than the Jeep, with a third row and a wheelbase that’s 119.8 inches to the Grand Cherokee’s 114.8. The Durango also looks far more like Dodge’s hooligans-in-crime Charger and Challenger than it does its Jeep platform-mate. The result is a handsomely menacing-looking SUV, from its purposeful-looking lower front grille to its boomerang LED taillights out back. Like the Jeep, it’s available with the Pentastar or Hemi mated to an eight-speed automatic, though the fuel-sipping diesel is notably absent. Inside, the Durango is a throwback to ’60s era Dodge muscle cars, namely in that there are acres of black plastic and chrome accents. The final result is a handsome one though; the interior sits seven in comfort while still offering the latest technology and a little performance to keep things from getting boring. It may be relatively unloved, but where the Durango really succeeds is the price. It starts a few hundred dollars more than the Jeep at $30,495, but its performance-focused, range-topping Hemi-powered R/T model rings in at just $41,995, right about where the mid-tier Grand Cherokee Limited sits. The verdictIt’s hard to call the Durango a bargain because you’re getting a lot of truck — 5,200 pounds to be exact — for a not insignificant amount of money. We really wish FCA offered the EcoDiesel mill for maximum capability and fuel economy, but the Durango’s Pentastar V6 returns a comparable 27 miles per gallon on the highway, and with cylinder deactivation and variable valve timing, the Hemi returns 22, which isn’t terrible for its size. For a little (or a lot) less, the Durango offers almost everything the Jeep does, and the fact that it’s a seven-seat people mover you wouldn’t be embarrassed to drive is icing on the cake. Even though they’re both plenty capable, we’re going to have to break with the Jeep-buying crowd here, and take the underappreciated Dodge. Are Dodge Durangos reliable?Per RepairPal, the Dodge Durango scores a reliability rating of 3.5 out of 5, which ranks it third in full-size SUVs. As for the powertrain, complaints are fairly low in number. You see, the Hemi family is generally very dependable. Importantly though, it's the 5.7L Hemi that stands out as the most reliable.
Is a Dodge Durango the same as a Jeep Grand Cherokee?Both the Dodge Durango and the Jeep Grand Cherokee are 'mid-size' SUVs, but both models have three-rows of seating. Families who need the most space possible might look for models that can fit up to eight passengers. The base Grand Cherokee can only fit up to five passengers.
Which is bigger Jeep Grand Cherokee or Dodge Durango?How the Grand Cherokee L Measures Up to the Durango. The Jeep's spanking-new architecture is bigger, first off. So the Grand Cherokee L has a 1.9-inch-longer wheelbase, is 4.1 inches longer overall, and is 2.1 inches wider, though its height is lower by 0.6 inch.
Do Dodge Durangos last long?The Dodge Durango can last between 200,000 to 250,000 miles and possibly more, with proper maintenance. That's about 13-16 years of service if you drive 15,000 miles every year.
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Dodge Durango vs Jeep Grand Cherokee reliability
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