5.7 Hemi vs 3.6 Pentastar Jeep Grand Cherokee

TO HEMI OR NOT TO HEMI? WHICH ENGINE IS RIGHT FOR YOUR 2021 JEEP GRAND CHEROKEE?

It wasn’t so long ago that when it came to the powertrain most would choose for their Jeep Grand Cherokee, a V-8 of the HEMI variety was the easiest answer. It always had the power, the noise, the performance and most importantly for some, the pedigree.

HEMI-powered Dodge, Plymouth and Chrysler products were the toast of the town in the muscle car era on the track, the drag strip and even the street. Dropping one in a mass-market SUV and pickup was a smart move that would guarantee sales.

Two Competent, Efficient Engines in the 2021 Jeep Grand Cherokee

Thing is, as fuel prices continue to climb and as more people are perhaps becoming a little more environmentally conscious, big V-8 engines have started to fall out of style for some, even though many of them aren’t actually that much worse for the environment than their V-6 counterparts.

Of course, on the flip side of that coin you have the Pentastar V-6 engine that you can get in almost every Grand Cherokee trim level. It’s powerful, it’s smooth and while it does give up a few horsepowers and a few torques to the 5.7L HEMI, the Pentastar still makes 295 hp and 260 lb.-ft. of torque, power enough for most any task you’re going to ask of your Grand Cherokee.

For its part, the 5.7L HEMI V-8 – that is to say, the smallest and least powerful of the three available HEMI options – is good for 360 hp and 390 lb.-ft. of torque. That’s great for quick acceleration off freeway entry ramps and the like, but it also offers cylinder-deactivation tech to help reduce fuel usage and bring it closer to what’s achieved by the Pentastar in that department.

So, it’s not strictly about power delivery or fuel economy, though those two factors could sway buyers one way or the other.

Indeed, it’s more the attitude of each engine that we should look at. If you like deep, low-down torque and a gruffer exhaust note, then the HEMI is a great choice. If you want smooth, predictable power at most any rev but don’t want to make too much of a show of it, then the Pentastar is worth a look.

Then there’s that other aspect that tends to separate the wheat from the chaff in the SUV and truck world: tow rating. You’d think that the HEMI would have a higher rating, and you’d be right – it’s just that you wouldn’t be right by all that much. It can tow up to 3,300 kg (7,200 lbs.), while the Pentastar can tow “just” up to 2,818 kg (6,200 lbs.). So, it’s not exactly a runaway victory for the HEMI there, as both can tow the kind of loads that most SUV drivers need to – campers, ski-doos and the like. You do get a little more with the HEMI, however, so that may be enough to sway some buyers.

Indeed, when it’s all said and done, these are both great engine choices, though the Pentastar is your only choice until you get to the Trailhawk model – offering the 5.7L V8 engine with Trail-Rated capability. Or, perhaps you want all the luxury offered by the Overland and Summit trims – authentic Nappa leather seating, premium Alpine audio, panoramic sunroof and more – but are hoping to save just a little bit of gas as cruising in comfort is priority number one then again: the V-6 should do you just fine.

That said, for some, though, the power and panache provided by the HEMI is too much to ignore. Finding the perfect engine for your 2021 Jeep Grand Cherokee is certainly an enjoyable affair, and regardless of your needs there’s an engine for you.

This includes the base MSRP, available discounts, options, green levy, destination, federal AC charge and finance adjustment values entered (down payment, trade-in and owe on trade).

"MSRP" represents the Manufacturer's Suggested Retail Price including freight. Price does not include taxes, insurance, registration, licence, retailer administration fees and other charges, and new tire duties (in Quebec). Retailers may sell for less. See your retailer for complete details.

Offer based on "Net Amount", which represents the "Starting at" price plus freight (from $1,895 to $2,795), federal A/C and applicable Green Levy charges. Net Amount does not include taxes, insurance, registration, license, retailer administration fees and new tire duties (in Quebec). On approved credit on eligible retail deliveries. Retailers may sell for less. See your retailer for complete details. The APR (where applicable) is the effective interest rate which includes the Consumer Cash which lower rate financing customers forego as a cost of borrowing. For further offer details, click here.

Estimated payments based on "Net Amount", which represents the "Starting At" price plus freight (from $1,895 to $2,795), federal A/C charge and applicable green levy charges. On approved credit on eligible retail deliveries. Net Amount does not include taxes, insurance, registration, license, retailer administration fees and new tire duties (in Quebec). Estimated payments are calculated based on the difference between the residual value and the Net Amount, plus any lease finance charges. Estimated payments will vary depending on down payment/trade. Low lease kilometre limit of 18,000 km/year for Chrysler, Jeep®, Dodge, Ram, FIAT® vehicles, and 16,000km/year for Alfa Romeo vehicles. Charge of $0.16 - $0.20 per excess kilometre will be applied to Jeep, Chrysler, Dodge, Ram, FIAT vehicles, plus applicable taxes at lease termination. Charge of $0.20 - $0.30 per excess kilometer plus applicable taxes will be charged at lease termination for Alfa vehicles. The APR is the effective interest rate which includes the Consumer Cash which lower rate financing customers forego as a cost of borrowing. For further offer details, click here.

In ON/BC/SASK/ALTA/MAN and QC, Dealer Price includes freight, A/C, OMVIC/AMVIC fee, tire levy, administration charges and all other retailer charges and excludes taxes, licence, insurance, and new tire duties (in QC). In the Maritimes and the Territories, Dealer Price may not include freight ($1,895), A/C, tire levy, administration and other dealer charges, and excludes taxes, licence and insurance. Pricing and offers are subject to change without notice and may not be accurate or completely current. See dealer for complete details.

"Starting At" price represents the Manufacturer's Suggested Retail Price ("MSRP") minus current Manufacturer Discounts which allow the dealer to sell for less. Manufacturer discounts may vary from time to time and may vary considerably by model, trim and engine option selected. Please see your retailer or visit Build and Price for further pricing information. Price listed is for base models. Vehicles shown may be an upgraded model. Taxes, freight, insurance, registration, license, retailer administration fees and new tire duties (in Quebec) not included. Retailers may sell for less.

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