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Mercedes-Benz R320Model year report

2007 Mercedes-Benz R320 Problems

Complaints
14filed with NHTSA
Median mileage
96,500miles, 12 complaints with mileage
Recalls
22 do-not-drive
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—overall rating starts with 2011 models
EPA fuel economy
21 mpgcombined, 3.0L 6-cyl · diesel 4WD/AWD · 19 city / 26 hwy

Sources: NHTSA records for the 2007 Mercedes-Benz R320 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 14 consumer complaints for the 2007 Mercedes-Benz R320. The part named most often is electrical system, with 3 complaints (21% of the total), followed by engine (3) and body and structure (2). 12 of the complaints include a mileage, and 17% of those were filed for vehicles with under 50,000 miles; the median is 96,500 miles. Of all complaints, 1 a fire, 1 an injury, according to the filers. NHTSA lists 2 recall campaigns (2 marked do-not-drive) and 65 technical service bulletins for this model year. Electrical system complaints overlap with 9 technical service bulletins filed under the same part. Engine complaints overlap with 2 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Transmission and drivetrain (1), Visibility (wipers, defrost, mirrors) (1).

Example complaints

Electrical system: “Engine 'died' (vehicle lost all power) while traveling at highway speed. I had to pull vehicle over on side of the road with no power assistance steering or braking. Brough it to the dealer for service 8/8/12, stalled two more times while enroute. I was told that it is a failed camshaft sensor. I looked up all safety recalls on vehicle, and found one for the crankshaft sensor in 2008. I was told that my failed camshaft sensor is different and is not covered by the manufacturer, even though it produces the same symptom/result as a failed crankshaft sensor. …”

NHTSA complaint #10469682, filed 2012-08, 75,200 miles

Engine: “On a 4 lane highway with a posted speed limit of 55 MPH vehicle was stopped at a light. Upon takeoff vehicle went into low power mode. Vehicle then became a hazard due to slow acceleration and not being able to pull off the highway in a safe manner due to heavy traffic. Vehicle has had a new turbo/waste gate assembly installed but still goes into low power mode without warning. No check engine light. In most cases if the vehicle can be gotten off the road and turned off for a few minutes it will return to normal. This may last for several days or several minutes. …”

NHTSA complaint #10532568, filed 2013-07, 90,000 miles

Suspension: “Preface: I own an automotive repair shop in carrollton texas. I have been working on cars since 1968. I am a three-time certified Mercedes-Benz master technician. In december, 2012 I replaced the right front air spring on a 2007 mercedes r-320. The manufacturer is aren't industries. Their part number is a-2587. Less than two months later, the air spring suffered a catastrophic failure. The spring material, which is similar in construction to a tire, ruptured. The vehicle was parked in the owner's garage when the blow-out occurred. The mileage at failure was 49336. …”

NHTSA complaint #10630863, filed 2014-09, 51,818 miles

Mileage when problems were reported

17% of the 12 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 75,000 and 138,000 miles.

0%0–100%10–2517%25–508%50–7525%75–10025%100–15025%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (12 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 96,500 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

201220143201620182025
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2007 Mercedes-Benz R320 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
R320 CDI 4matic 4WD/AWD3.0L 6-cyl · diesel7-speed automatic192621$4,550

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2007 Mercedes-Benz R320 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 65 on record; the latest 10 are shown.

See all 65 bulletins →

Other model years of the Mercedes-Benz R320

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20071496,5002—21—Not enough data

All Mercedes-Benz R320 model years

Frequently asked questions

How many NHTSA complaints does the 2007 Mercedes-Benz R320 have?

NHTSA recorded 14 consumer complaints for the 2007 Mercedes-Benz R320 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2007 Mercedes-Benz R320 is reported most often?

Electrical system is named most often, in 3 complaints (21% of the total), followed by engine with 3.

Has the 2007 Mercedes-Benz R320 been recalled?

NHTSA lists 2 recall campaigns for this model year, 2 of them with a do-not-drive advisory. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2007 Mercedes-Benz R320 get?

The EPA rates the 2007 Mercedes-Benz R320 (R320 CDI 4matic, 3.0L 6-cyl · diesel) at 21 mpg combined, 19 city and 26 highway, with an estimated annual fuel cost of $4,550 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2007 Mercedes-Benz R320 reported?

Among the 12 complaints that include a mileage, the median is 96,500 miles and the middle half falls between 75,000 and 138,000 miles; 17% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.