Is the 2021 Ram PROMASTER reliable?

The 2021 Ram PROMASTER has 143 complaints filed with NHTSA (1.8x the segment average). Our reliability verdict: avoid. Most common issue: DRIVER ASSIST/CAMERAS problems.

What are common problems with the 2021 Ram PROMASTER?

Top problems: DRIVER ASSIST/CAMERAS (35 complaints, avg repair $500); OTHER (27 complaints, avg repair $500); ELECTRICAL (19 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2021 Ram PROMASTER?

Yes, there are 8 recall(s): SEAT BELTS, POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:PARK PAWL, ELECTRICAL SYSTEM:WIRING, ELECTRONIC STABILITY CONTROL (ESC), STRUCTURE:BODY:DOOR, BACK OVER PREVENTION: SENSING SYSTEM: CAMERA, ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY, EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:. Contact any Ram dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2021 Ram PROMASTER?

The 2021 Ram PROMASTER gets 24 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2000. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2021 Ram PROMASTER?

Estimated US average full-coverage insurance for the 2021 Ram PROMASTER is approximately $1,687/year (sedan-midsize class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2021 Ram PROMASTER

Problems, Recalls & Reliability Report

Avoid This Year

Quick Summary

The 2021 Ram PROMASTER has 143 owner complaints filed with NHTSA — that's 1.8x the segment average of 80. The most common issue is driver assist/cameras problems (24% of all complaints), specifically: the blind spot detector is not working. the van can be inspected upon request. this is a large vehicle and blind spot detection is an extremely important safety feature. a dodge dealer found the following stored codes: u1700-87, c100b29, and c100e29 - i don't know if these are blind spot sensor code. There are 8 recalls issued for this model year. ⚠️ 4 fire reports filed.

4 fire reports 2 crash reports

143

Total Complaints

Recalls Issued

—/5

Safety Stars

1.8x

vs Segment Avg

Known Problems(top 5 of 8)

DRIVER ASSIST/CAMERAS

35 complaints

24%

• The Blind Spot Detector is not working. The van can be inspected upon request. This is a large vehicle and blind spot detection is an extremely important safety feature. A Dodge dealer found the following stored codes: U1700-87, c100B29, and c100e29 - I don't know if these are blind spot sensor code
• Since brand new, blind spot monitoring system would turn itself off repeatedly after being turned on. I cannot replicate how or why it occurs and it has happened at various highway and lower speeds.
• The contact owns a 2021 Ram Promaster 1500. The contact stated that while driving at various speeds, the blind spot monitoring system was not working properly. The system continued to play an audible chime. The system was registering that vehicles were nearby even though there was none. The contact

Typical onset: 50K miles Est. repair: $500🔥 1 fire reports

“The Blind Spot Detector is not working. The van can be inspected upon request. This is a large vehicle and blind spot detection is an extremely important safety feature. A Dodge dealer found the following stored codes: U1700-87, c100B29, and c100e29 - I don't know if these are blind spot sensor code”

— NHTSA complaint filing

When Problems Appear on the 2021 Ram PROMASTER

Based on 27 owner complaints that included an odometer reading. Median mileage at time of complaint: 20K miles. Most complaints cluster in the 0-30K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

DRIVER ASSIST/CAMERAS

Later than typicalmedian 36K mi · 12 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

ENGINE

High-mileage issuemedian 64K mi · 5 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.

Recalls (8)

SEAT BELTS09/09/2021

Chrysler (FCA US, LLC) is recalling certain 2021 Ram ProMaster City and Ram ProMaster vehicles. The seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: An unsecured child restraint system can increase the risk of injury during a crash.

Fix: Dealers will inspect and replace the seat belt retractors as necessary, free of charge. Owner notification letters were mailed October 28, 2021. Owners may contact FCA US LLC customer service at 1-800-853- 1403. FCA US LLC's number for this recall is Y61.

Fuel Cost Calculator for 2021 Ram PROMASTER

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,001

Per month

$167

Per mile

16.7¢

MPG

City driving (worst-case MPG)

$2,286/yr

Highway driving (best-case MPG)

$1,715/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2021 Ram PROMASTER

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$1,687

Full coverage / month

$141

Liability only / year

$611

vs US avg

+1%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-midsize)0.96x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.05x

= Full coverage estimate$1687

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Ram PROMASTER Service Intervals

Oil change

8K mi / 12 mo

Tire rotation

8K mi

Brake fluid

36 months

Transmission fluid

60K mi

Engine coolant

100K mi

Spark plugs

100K mi

Cabin air filter

24K mi

Engine air filter

30K mi

Differential (AWD/4WD)

30K mi

5.7L HEMI: 8,000 mile oil intervals; EcoDiesel: shorter intervals for DEF and fuel filter. Towing usage requires severe service intervals.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Ram New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

3 yr / 36K mi

Powertrain

5 yr / 60K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

5 yr / unlimited mi

Roadside assistance

5 yr / 60K mi

These are the terms for a new Ram. If you're buying a used 2021 PROMASTER, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Ram dealer for VIN-specific remaining warranty.

Estimated Repair Costs

DRIVER ASSIST/CAMERAS(~50K mi)

$500

OTHER(~50K mi)

$500

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 143 owner complaints for this specific year, here's what to check or ask about:

☐
DRIVER ASSIST/CAMERAS: The Blind Spot Detector is not working. The van can be inspected upon request. This is a large vehicle and blind spot detection is an extremely important safety feature. A Dodge dealer found the following stored codes: U1700-87, c100B29, and c100e29 - I don't know if these are blind spot sensor code
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: Vehicle bottomed out and lodged on concrete entering driveway. Thor Scope Ram Promaster 1500 Chassis sits low and Thor installed Cummins Onan generator and 2 Trojan batteries under the chassis, that sit 2 or more inches below the rear axle against the Cummins install guidelines. The generator needs
Typically appears around 50K miles. Repair cost ~$500
☐
ELECTRICAL: August 6, 2021 NHTSA Safety Issue ID: 21V3960000 As a first-time purchaser of an RV, what I had hoped would be an answer to some of my life’s difficulties has turned out to be a nightmare. I walked into nothing less than a predatory vehicle purchasing experience with General RV in Ashland VA and
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: The contact owns a 2021 Ram Promaster. The contact stated while driving at an undisclosed speed, the vehicle stalled without warning. The vehicle was taken to the dealer where there were no codes retrieved; however, the contact was informed that the failure was related to the power control module. T
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 8 recalls have been completed — free at any Ram dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)