Most common 1999 Mercedes-Benz ML430 problems
Share of the 44 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz ML430 complaints by model year
Best ML430 years: 2000. Compare all years →
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 1999 Mercedes-Benz ML430:
Engine crankshaft pulley failure
The office of defects investigation (odi) opened this preliminary evaluation to investigate allegations of engine crankshaft pulley harmonic balancer failure that could result in loss of power-steering assist.odi has received a total of 546 non-duplicative reports that allege engine crankshaft pulley harmonic balancer failure on all Mercedes-Benz vehicles using the subject component.the subject component failures…
Brake line chafe
Analysis of complaints to odi and Mercedes and warranty claim data submitted by Mercedes indicates that the alleged defect has occurred at a low rate (36.5 complaints per 100,000 vehicles and 0.29 percent warranty claim rate), with no discernable defect trend indicating that the rate of chafing related brake line failures is increasing.there have been no new complaints since January 2009.when the analysis is limited…
What 1999 Mercedes-Benz ML430 owners say
Engine & cooling
Crankshaft harmonic balancer failure! (1999 Mercedes Benz ML430)... Mileage: 82000 ref: NHTSA action # 03058..he pulley failure just occurred while driving down i85 in atl. Upon hearing a knocking noise and smelling what seemed like rubber burning, I immediately stopped the engine. It took no time to find the source of the smell, it was the v-belt (no longer centered on all pulley s) rubbing against the engine. Being reasonably mechanic savvy, I knew this was a little more serious than just a water pump outage and proceeded called a tow truck. The vehicle was towed to my local mb dealership (mb of s.atl) at a cost of $52.00& aprox drop time: 8:00 pm. The following morning I contacted the service department to further explain my situation and was advised that this is a known and very common issue with the v6 and v8 engines of which mine is the latter (113942). …
I was driving my ML430 on the highway when all of a sudden my power steering gave out and my car started to overheat. I managed to "strong arm" the car, (hopped a curb mid-turn) and pull over into a local grocery store. What my dealer had diagnosed was that the harmonic balancer was disconnected and the crankshaft pulley assembly came apart. I'm afraid that if my wife had been driving the car at the time the circumstances May have been more severe. Since the pulley came apart at such force it also managed to rip a hole into my oil pan. All in all I'm looking at a $3000 repair to a potentially deadly problem. When I contacted the dealership they told me that this was a common problem and offered to present the issue to mb and request help for the repair. "common problem!" .. I thought to myself. Mb came back with no assistance since the car was out of warranty. …
Transmission & drivetrain
Ln late August, the "check engine" light was illuminated on the dashboard of a 1999 Mercedes benzml430. Car was delivered to the dealer to remedy this problem. After several weeks and tests, Mercedes Benz decided to replace transmission. Owner incurred cost of labor. In November, driver was parking car and removed key from ignition while transmission was in drive. Key released in error causing car to roll into a ravine and hit a tree. Mercedes has done nothing to correct the failure of this important safety feature. In fact, they state that the keys(3)are worn down and no longer provide the safety by limiting the release of the key unless the car is in park mode. Car was delivered to Mercedes Benz for investigation. After a two week investigation, Mercedes claims the keys(3) were worn out and that is why this important safety feature failed. …
Tl contact owns a 1999 Mercedes Benz ML430. While driving in reverse and forward at 25 MPH, the contact heard a clicking sound underneath the center of the vehicle. He assumed something was loose under the vehicle and drove to the dealer. The dealer noticed that the front driveshaft bearing was loose. After repairing the shaft, the dealer discovered that the transfer case was also causing the issue. The contact feels that the manufacturer should repair the vehicle because the owner's manual does not state anything about repairing the transfer case. The vehicle is currently being repaired. The current mileage was 115,000 and failure mileage was 85,000. Updated 04/13/09. The consumer had to pay$ 3850 for a new transfer case. Updated 06/15/09.
Steering
Tl contact owns a 1999 Mercedes Benz ML430. Immediately after starting the vehicle, the contact noticed a loud noise coming from the hood while driving 5 MPH. The steering column became difficult to turn. Approximately ten minutes later, the steering began working again however, he still felt resistance when turning. In addition, the noise persisted. The manufacturer stated that the vehicle was included in NHTSA campaign id number 08V465000 (steering:hydraulic power assist:hose, piping, and connections) and was advised to wait for the recall notice. The dealer performed the recall repair and stated that the hydraulic pump needed to be replaced. After the repair, the failure persisted. The contact has invoices to support his complaint. The vehicle has not been repaired. The current mileage was 188,200 and failure mileage was 186,000.
The harmonic balancer on the crankshaft of my Mercedes ML430 VIN# 4jgab72e7xa09375 failed w/o warning causing the fan belt to fail and the balancer started cutting a hole in the oil pan. This failure just by "luck" did not cause a moving accident due to loss of electrical and power steering, or an under the hood fire. This cost me $500 to get fixed when a $70 part could have been replaced if I had only been notified of this frequent failure on Mercedes models like mine. The dealer was little help in solving this problem.
1999 Mercedes-Benz ML430 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 4.3L 8-cyl | 5-speed automatic | 4WD/AWD | 14 / 17 / 15 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 1999 Mercedes-Benz ML430 a good car?
Based on 44 owner complaints filed with NHTSA, the 1999 ML430 rates average: 1.4× as many complaints as a typical year of the ML430 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 1999 Mercedes-Benz ML430?
The engine & cooling — 19 complaints, 43% of all complaints for this model year, most often about engine. Next are the transmission & drivetrain (8) and steering (6).
How many recalls does the 1999 Mercedes-Benz ML430 have?
NHTSA lists no recalls for the 1999 Mercedes-Benz ML430. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Mercedes-Benz ML430?
The best years by complaints, compared at the same age, are 2000. See the full Mercedes-Benz ML430 years comparison.
At what mileage do 1999 Mercedes-Benz ML430 problems happen?
The median mileage reported in complaints is about 78,000 miles; 6% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.