MDS Lifter / Cam Lobe Failure (HEMI V8)
medium- Typically appears
- 80–130k mi
- Estimated repair
- $2,500 – $6,000
2017 Dodge
SUV
The 2017 Dodge Durango is a three-row, body-on-frame-inspired unibody SUV that punches above its weight in the family hauler segment. With the 5.7L HEMI V8 under the hood, it delivers legitimate truck-like grunt — 360 hp and a 7,400-lb tow rating — while still seating up to seven. It's one of the few mid-size SUVs that can actually tow a boat or camper without breaking a sweat. The Durango shares its platform with the Jeep Grand Cherokee, which means parts availability is solid and independent shops know this vehicle well. The HEMI engine, paired with Dodge's 8-speed automatic, is proven and durable when maintained properly. The MDS (Multi-Displacement System) cylinder deactivation is a love-it-or-hate-it feature — it helps fuel economy but is the source of the most common mechanical headaches on this engine. As an older-generation design still selling strong in 2017, the Durango's interior tech was beginning to show its age compared to fresher competitors, but the Uconnect infotainment system remained a class leader. Buyers get a lot of vehicle for the money, but the V8 model especially demands consistent, timely maintenance to stay out of trouble.
The 2017 Dodge Durango is a three-row, body-on-frame-inspired unibody SUV that punches above its weight in the family hauler segment. With the 5.7L HEMI V8 under the hood, it delivers legitimate truck-like grunt — 360 hp and a 7,400-lb tow rating — while still seating up to seven. It's one of the few mid-size SUVs that can actually tow a boat or camper without breaking a sweat. The Durango shares its platform with the Jeep Grand Cherokee, which means parts availability is solid and independent shops know this vehicle well. The HEMI engine, paired with Dodge's 8-speed automatic, is proven and durable when maintained properly. The MDS (Multi-Displacement System) cylinder deactivation is a love-it-or-hate-it feature — it helps fuel economy but is the source of the most common mechanical headaches on this engine. As an older-generation design still selling strong in 2017, the Durango's interior tech was beginning to show its age compared to fresher competitors, but the Uconnect infotainment system remained a class leader. Buyers get a lot of vehicle for the money, but the V8 model especially demands consistent, timely maintenance to stay out of trouble.
The MDS lifter system is oil-pressure dependent and extremely sensitive to degraded oil. Stretching intervals is the single biggest contributor to the expensive lifter/cam failures seen on this engine. Use only the specified 5W-20 viscosity.
Dodge's 8-speed automatic (ZF 8HP) is durable but not a 'lifetime fluid' transmission in real-world use. Fresh fluid prevents wear and valve body issues. Dark or burnt-smelling fluid is a red flag.
Applies if the vehicle has been upgraded or purchased with AWD. The active transfer case uses a specific fluid; using the wrong type causes premature clutch wear.
The HEMI uses two plugs per cylinder (16 total). At 30k miles, plugs can seize in the aluminum heads if left too long, making replacement far more costly. Don't wait for a misfire.
HOAT coolant degrades and becomes acidic. Degraded coolant accelerates water pump and radiator wear — both repairs are more expensive on the V8 due to access.
Brake fluid is hygroscopic and absorbs moisture over time. In Wisconsin's freeze-thaw cycles, water-contaminated fluid can cause ABS modulator corrosion and reduced braking performance.
Brake and transmission cooler lines on Wisconsin-salted Durangos can develop rust perforation without obvious external signs. A lift inspection every fall catches problems before they become roadside emergencies.
The HEMI's high compression demands a strong battery for cold starts. A battery that tests fine in September can fail to start the truck at -10°F in January. Replace proactively rather than reactively.
Always defer to the manufacturer's service manual for warranty-mandated intervals.
The 5.7L HEMI Durango is not cheap to run. Fuel alone will exceed $3,000/year for average drivers. Annual maintenance runs $900–$1,800 in normal years, but a single MDS lifter job or TIPM replacement can add $1,000–$6,000 to any given year. Budget accordingly and don't skip oil changes — it's the cheapest insurance you can buy on this engine.
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