By on December 8, 2014

2014 Jeep Cherokee LimitedIn each of the last three months, the Cherokee has been the best-selling model at America’s fastest-growing volume brand. Jeep sales are up 44% in the United States through the first eleven months of 2014, an improvement of 191,895 units.

Excluding the Cherokee, which wasn’t on sale until the fourth-quarter of 2013, Jeep sales are still up 10% in 2014 and 15% in November. Those Cherokee-less increases still far outpace the auto industry as a whole, which is up a little more than 5% this year; a little less than 5% in November.

Yet even before Jeep once again broadens its lineup with the subcompact Renegade, the Cherokee helped power the brand to new heights. The Jeep brand last topped the 500,000 mark in calendar year 1999. Jeep sold 629,074 utility vehicles during the first eleven months of 2014. (Read More…)

By on August 11, 2014

2014 Jeep CherokeeOn a percentage scale, through the first seven months of 2014, the only auto brand improving its year-over-year U.S. sales tally more proficiently than Jeep is Maserati. In other words, Jeep is the fastest-growing volume auto brand in America in 2014.

Based on pure volume gains, no auto brand, certainly not Maserati, has improved on its seven-month 2013 sales total as successfully as Jeep has, with 120,708 extra sales over the last seven months. (Read More…)

By on June 27, 2014

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The Jeep Grand Cherokee received a diesel option earlier this year, but don’t look for the Cherokee to get one any time soon – at least not in North America.

(Read More…)

By on June 25, 2014

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For a brief stretch of time, Jeep did business in the UK as a purveyor of authentic American SUVs. The Cherokee, Wrangler and Grand Cherokee had a respected niche, even if they didn’t sell in particularly large numbers. And then it all went down the tubes.

(Read More…)

By on March 30, 2014
Roy Lunn (on right) receiving an award from the Society of Automotive Engineers for the Eagle 4X4

Roy Lunn (on right) receiving an award from the Society of Automotive Engineers for the Eagle 4X4

You may not have heard the name Roy Lunn, but undoubtedly you’ve heard about the cars that he guided into being. You think that’s an exaggeration? Well, you’ve heard about the Ford GT40 haven’t you? How about the original XJ Jeep Cherokee? Lunn headed the team at Ford that developed the LeMans winning GT40. Later as head of engineering for Jeep (and ultimately VP of engineering for AMC) he was responsible for the almost unkillable Cherokee, Jeep’s first unibody vehicle, a car that remained in production for over two decades with few structural changes and could be said to be the first modern SUV. In addition to those two landmark vehicles, Lunn also was in charge of the engineering for  two other influential cars, the original two-seat midengine Mustang I concept and the 4X4 AMC Eagle. If that’s not an impressive enough CV for a car guy, before Ford, he designed the Aston Martin DB2 and won an international rally. After he retired from AMC, he went to work for its subsidiary, AM General, putting the original military Humvee into production. Oh, he also had an important role in creating one of the most legendary muscle cars ever, the Boss 429 Mustang. So, yeah, you should know about Roy C. Lunn. (Read More…)

By on March 27, 2014

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The problem with a “take-no-prisoners” approach to evaluating new cars is that when you’re the only one adopting a particular stance, it can get pretty lonely – even your own readers begin to doubt you. My initial review of the Jeep Cherokee was a great example of this. Most reports are fairly positive – and indeed, there was plenty to like about the car, as my own review mentioned – but many of the car’s flaws were glossed over or simply not mentioned. On the other hand, we at TTAC gave you the unvarnished truth about the Cherokee – and Chrysler was gracious enough to let us review the Cherokee again.

(Read More…)

By on February 25, 2014

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A TTAC reader is an engineer with a major powertrain company, and offered his extremely detailed analysis of the ZF 9-speed. Consider this an AP level course in powertrain engineering.

Before we dive right in to the 9-speed gearbox, let’s take a quick refresher on the basics of gears. The simplest gear set consists of 2 parallel gears mounted on 2 parallel shafts. Shown in Fig.1 is a gear set with a 20 tooth drive gear on the right and a 30 tooth driven gear on the left. For this gear set the speed of the driven gear is 1.5 times lower than the drive gear, and assuming no frictional losses anywhere, the torque on the driven gear is 1.5 times higher. This gear set has a ratio of 1.5:1. This type of a gear set is usually not favorable for packaging since it requires 2 parallel shafts, and there are largest separating forces that push the 2 gears apart which means that the bearings supporting the shafts have significant radial loads on them, in addition to an axial load if the gears are helical.

(Read More…)

By on February 20, 2014

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The folks at Jeep have known for some time that high volume on-road models have to be part of the mix to keep low volume off-road models viable. From the 1946 Willys Station Wagon and the original Wagoneer, to the Grand Cherokee and the Compass, Jeep has been on a steady march towards the word no Wrangler owner wants to hear: “crossover”. Their plan is to replace the off-road capable Liberty and compete with the RAV4, CR-V and 20 other small crossovers with one vehicle: the 2014 Cherokee.

With two ambitious (and contradictory) missions and unconventional looks, the Cherokee has turned into one of the most polarizing cars in recent memory. It is therefore no surprise the Cherokee has been getting mixed reviews. USA Today called it “unstoppable fun” while Consumer Reports called it “half baked” with a “choppy ride and clumsy handling.” Our own Derek Kreindler came away disappointed with its on-road performance at the launch event, though he had praise for the Cherokee’s off-road capabilities. What should we make of the glowing reviews, and the equally loud dissenting voices?

(Read More…)

By on February 11, 2014

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In late 2013, TTAC was invited to review the Jeep Cherokee. As the journalist assigned to cover the launch, I gave what I felt was a nuanced but critical assessment of the vehicle: that it delivered with respect to its off-road prowess, but left a lot to be desired in other areas, namely the on-road driving experience and overall packaging.

TTAC was alone in its criticisms, with other outlets heaping praise on the Cherokee for attributes that I felt were lacking. A backlash from readers, Mopar fans and other entities ensued, and we were left looking like a fringe element of anti-Cherokee cranks, despite what we as an organization felt was a fair and nuanced, if – ahem – slightly colorful review of the car. It turns out that in the end, we weren’t alone.

(Read More…)

By on February 8, 2014

ZF 9HP Transmission, Picture Courtesy of Land RoverIn a week we will post our first full review of the all-new and all-controversial 2014 Jeep Cherokee. The new Jeep isn’t just raising eyebrows for the love-it or hate-it styling. Or the resurrection of the Cherokee badge. Or the constant delays in production. Or the transverse mounted engine. Or the lack of solid axles. None of that laundry list seems to cause as much discussion around the automotive water cooler than ZF’s 9HP 9-speed transmission. Click past the jump for a deep dive into the tranny with more speeds than my bicycle. If you don’t want to explore transmissions in detail, don’t click. You have been warned.

(Read More…)

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