Ram 1500 (DS) Buyer's Guide — 2014-2018
Ram · 1500 · DS · 2014–2018
Used buyer's guide for 2014-2018 Ram 1500 (DS): Hemi tick, rust, transmission cooler leaks, EcoDiesel issues, air suspension failures. Pricing, maintenance costs, competitors, and FAQs.
Mirko9 min read
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The 2014-2018 Ram 1500 (DS) offers a smooth ride and strong powertrain options, but its reliability record is uneven. The most significant risk is pervasive body rust, which can affect structural integrity and resale value, especially in northern climates. This guide covers the known failure patterns across all engine options, what you should expect to pay, and how the DS Ram stacks up against its full-size truck rivals.
Generation Overview
The DS-generation Ram 1500 ran from 2014 through 2018, sharing the previous generation's architecture while adding an eight-speed automatic transmission and the 3.0L EcoDiesel V6. Trim levels range from Tradesman to Laramie Longhorn. A mid-cycle update in 2015 added available air suspension and upgraded UConnect systems, but the cab and chassis remained largely unchanged. This generation continued alongside the new DT model after 2019. Engine options: the 3.6L Pentastar V6 (305 hp), the 5.7L Hemi V8 (395 hp), and the 3.0L EcoDiesel V6 (240 hp). The 8HP70 eight-speed automatic transmission from ZF was a significant upgrade over the previous generation's six-speed. Coil-spring rear suspension (unique among domestic trucks) gives the DS Ram a noticeably better ride than the Ford F-150 or Chevrolet Silverado.
Pricing: What to Expect
DS-generation Rams offer strong value in the used market. A 2014–2016 Tradesman or Express with the V6 and 100k miles ranges from $14,000 to $18,000. A comparable Hemi model runs $17,000–$22,000. Laramie and Longhorn trims with leather, UConnect, and the Hemi command $22,000–$30,000. EcoDiesel trucks carry a $2,000–$4,000 premium over equivalent Hemi models, despite higher maintenance costs. Crew cabs are worth $1,500–$3,000 more than Quad Cabs. 2017–2018 models with the 8.4-inch UConnect and active grille shutters command the highest prices. Budget $2,000–$3,000 for deferred maintenance and rust mitigation on any DS Ram you buy.
Known Issues
Hemi Tick (Exhaust Manifold Bolts)
A very common issue on 5.7L V8 trucks: exhaust manifold bolts snap, creating a ticking noise that worsens when cold. If bolts break, the manifold can warp, requiring replacement. The root cause is thermal expansion cycling that stresses the bolts. Aftermarket manifold stud kits provide a permanent fix.
- Who it affects: 2014-2018 models with the 5.7L Hemi V8
- Severity: Medium
- What to watch for: A ticking sound from the engine bay that changes with RPM; inspect manifold bolts for rust or missing heads.
Transmission Cooler Line Leaks
The crimped connections on the 8HP70 transmission cooler lines can develop stress cracks, causing fluid leaks. A small leak can lead to low fluid and transmission damage. The lines run near the front of the engine and are exposed to road debris. Replacement lines cost $150–$300 plus $200–$400 in labor.
- Who it affects: All 2014-2018 Ram 1500s, especially those with the 8-speed automatic
- Severity: High
- What to watch for: Red fluid puddles under the front center of the truck; low transmission fluid level on dipstick; hard shifting when fluid is low.
Rust on Rear Fender Wells and Cab Corners
Corrosion on the rear fender wells and cab corners is a known problem, particularly in regions that use road salt. Rust can perforate the sheet metal, requiring expensive panel replacement. The inner cab corners behind the rear doors are especially vulnerable because they trap moisture and debris. Rust repair for both rear corners typically runs $2,000–$4,000 for quality bodywork.
- Who it affects: 2014-2018 models in salt-belt states; all trims
- Severity: Critical
- What to watch for: Bubbling paint or visible rust at the rear wheel openings and behind the rear doors; rust bubbles along the lower edge of the tailgate.
EcoDiesel EGR Cooler Failure and DEF System Issues
The 3.0L EcoDiesel's EGR cooler is prone to failure, causing coolant loss and potential engine overheating. Additionally, the DEF (Diesel Exhaust Fluid) system often has sensor and heater failures, triggering check engine lights and reduced power. The EcoDiesel also has a known issue with the oil cooler housing cracking, leading to coolant-oil mixing. Complete EGR cooler replacement costs $1,500–$2,500.
- Who it affects: 2014-2016 EcoDiesel models most; later models have some updates but still problematic
- Severity: High
- What to watch for: White smoke from exhaust, coolant smell, or DEF- related fault codes; inspect service records for cooler replacements; milky oil on dipstick.
Air Suspension Compressor Failure
On trucks with the optional air suspension, the compressor often fails due to moisture ingress or overheating, leaving the truck sagging or unable to adjust ride height. Replacement costs can reach $1,200. Air spring bags can also leak, requiring replacement ($400–$800 per corner). Many owners convert to conventional coil springs when the system fails.
- Who it affects: 2015-2018 models equipped with air suspension
- Severity: Medium
- What to watch for: Compressor runs excessively or fails to raise truck; 'Suspension Disabled' warning on cluster; truck sits unevenly when parked.
UConnect Screen Delamination
The 8.4-inch touchscreen can delaminate — bubbles appear between layers — making the screen unresponsive. This is a cosmetic and functional issue that requires screen replacement ($500–$900). The delamination is caused by adhesive breakdown from heat and UV exposure.
- Who it affects: 2014-2018 models with 8.4-inch UConnect screen
- Severity: Medium
- What to watch for: Bubbles or discoloration under the screen surface; unresponsive touch zones; ghost touches.
Front Control Arm Bushing Wear
Lower control arm bushings wear prematurely, causing front-end clunks and vague steering. The bushings are not serviceable separately — the entire control arm must be replaced per side ($300–$500 each). The issue is more common on trucks that carry heavy loads or see rough roads.
- Who it affects: 2014-2016 models
- Severity: Medium
- What to watch for: Knocking sound from front suspension on rough pavement; steering wheel vibration at highway speeds.
Camshaft and Lifter Failure (Hemi)
The 5.7L Hemi V8 is prone to camshaft and lifter failure on models equipped with MDS (Multi-Displacement System / cylinder deactivation). A failed lifter can collapse and damage the camshaft lobe, requiring a complete cam and lifter replacement ($3,000–$5,000). This typically occurs between 80,000 and 120,000 miles. Using high-quality synthetic oil and avoiding prolonged idle times can reduce the risk.
- Who it affects: 2014-2018 Hemi V8 models (with MDS)
- Severity: High
- What to watch for: Ticking noise from the top of the engine that increases with RPM; misfire codes (P0300–P0308); check engine light with camshaft position correlation codes.
Sub-Variant Issues
Pentastar V6 (3.6L) — Oil Cooler Housing Failure The 3.6L Pentastar has a known issue with the oil cooler housing cracking at the coolant crossover pipe, causing coolant and oil to mix. Replacement costs $800–$1,200. The Pentastar is otherwise the most reliable engine in the DS lineup. If you are looking at a V6 model, inspect the coolant reservoir for oil contamination.
EcoDiesel — Timing Belt and Water Pump The 3.0L EcoDiesel requires timing belt and water pump replacement every 100,000 miles at a cost of $1,500–$2,500. This is a critical maintenance item — belt failure causes catastrophic engine damage. If you are looking at an EcoDiesel above 90,000 miles, ask if the timing belt has been done.
Rebel and Off-Road Models — Suspension Component Wear Rebel and off-road package trucks see accelerated wear on ball joints, tie rod ends, and sway bar links. The Rebel's air suspension (if equipped) adds further complexity. If you are looking at a Rebel, this adds another layer of risk.
Maintenance Costs
The DS Ram 1500 costs $800–$1,400 per year to maintain depending on engine and usage. Key intervals: oil change every 6,000–7,500 miles ($60–$90 for V6/V8, $100–$130 for EcoDiesel), transmission fluid every 60,000 miles ($400–$500), transfer case fluid every 60,000 miles ($150–$250), and coolant flush every 5 years ($150–$250). The EcoDiesel requires fuel filter changes every 20,000 miles ($150–$200) and timing belt at 100,000 miles ($1,500–$2,500). Budget $500–$1,000 for exhaust manifold bolt repairs on Hemi trucks. Rust prevention (undercoating, fluid film) runs $150–$300 annually but is strongly recommended for salt-belt trucks.
Competitors
The DS Ram 1500 competes directly with the Ford F-150 (2015–2020), which is lighter and more fuel-efficient with its aluminum body but suffers from issues with the 10-speed transmission and EcoBoost turbo failures. The Chevrolet Silverado 1500 (2014–2018) has a more durable frame and a proven V8 but an outdated interior and a harsher ride. The Toyota Tundra (2014–2021) is the most reliable full-size truck with the bulletproof 5.7L V8, but its fuel economy is the worst in class and the chassis feels dated. The Nissan Titan (2016–2021) offers the best warranty but dealer support is thinner and resale value is weaker. The Ram's coil-spring rear suspension gives it a clear ride-quality advantage over all of them.
FAQs
Which engine is most reliable in the DS Ram 1500?
The 3.6L Pentastar V6 is the most reliable of the three options. It avoids the Hemi's cam/lifter and manifold bolt issues and the EcoDiesel's EGR and timing belt problems. The V6 is adequate for daily driving but struggles with heavy towing (max 7,500 lbs vs the Hemi's 10,700 lbs).
Should I buy a 2014–2016 or 2017–2018 Ram 1500?
2017–2018 models are preferable. They have a more refined UConnect system, active grille shutters for better fuel economy, and some EcoDiesel updates. The 2014–2016 models are cheaper but more likely to need control arm bushings, transmission cooler lines, and rust repairs.
How bad is the rust problem really?
Severe enough that it should be your top inspection priority. Rust can perforate the cab corners and rear fenders within 5–7 years in salt-belt states. A thorough underbody inspection before purchase is essential. Trucks from southern or western states typically have no rust and are worth a premium.
Can I delete the MDS system on the Hemi?
Yes, aftermarket tuners can disable MDS (cylinder deactivation), which reduces the risk of cam and lifter failure. This also eliminates the 4-cylinder mode drone. Many Hemi owners disable MDS as a preventive measure.
Is the air suspension worth the risk?
The air suspension provides an excellent ride and self-leveling for towing, but the system is expensive to repair when it fails. If you want long-term ownership without surprises, look for a truck without air suspension or one that has already been converted to coils.
FAQ
What are the most common problems with the Ram 1500 (DS) (2014-2018)?
Hemi tick (loose exhaust manifold bolts) is the most commonly reported issue on V8 models. EcoDiesel models have their own EGR cooler and DEF system concerns, and air suspension compressor failure affects trucks with that option across engines.
Is the Ram 1500 (DS) (2014-2018) reliable?
The Hemi V8 is generally dependable outside of the exhaust manifold bolt issue, which is a known, repairable annoyance rather than a major failure. The EcoDiesel carries more maintenance-sensitive risk around its emissions system.
Are there Ram 1500 (DS) years to avoid?
Hemi tick and rust on rear fender wells span the full 2014-2018 range rather than concentrating in one year. If avoiding the EcoDiesel's EGR/DEF complexity matters to you, a Hemi V8 model sidesteps that specific risk entirely.