Skip to content
Vehicle speed controlPart report

1999 Subaru Legacy Vehicle speed control Problems

Complaints
12about this part
Share
13%of 94 total for the year
Median mileage
91,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the vehicle speed control of the 1999 Subaru Legacy, 13% of the 94 complaints for this model year. Where a mileage was given, the median is 91,000 miles. 3 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Started noticing a problem when coming down a long, steep hill with extensive shuddering when braking. When I got into town, there was a even more shuddering when coming to a stop at a red light. I had to pull on the parking brake to stop the car. When we started up again, it pulled very hard so we pulled over and when I put the car into neutral, the engine raced up above 4,000 RPM. I shut the engine off, but when it was started again, it raced again. I eased it safely home a short distance away with the uncontrolled acceleration problem continuing.”

NHTSA complaint #10668510, filed 2014-12, 141,000 miles

“I have a 1999 Subaru Legacy. On 2 separate occasions I experience sudden acceleration. Once driving on expressway. Lasted a few seconds. 2nd instance stopped at stop sign, foot on brake, car accelerated. Foot was on brake & then put gear in neutral. I called dealership & was told that this happened because heater/AC was on dual m (feet & chest) & this was normal. I have had car checked & there is nothing wrong with it. So they say. Based on service mgrs response, others have complained about the acceleration. Given the events with toyota --there should be further investigation.”

NHTSA complaint #10303002, filed 2010-01, 46,765 miles

“97000 miles - automatic w cruise - vehicle just started experiencing intermittent high idle conditions. The first condition has persisted for several days. Vehicle (even when warm) idles at ~1.5k RPM in park. When coasting in drive, vehicle does not slow down as it normally should. It is almost as if vehicle is driving itself. When stopping abruptly,the ABS did not seem to engage and the car was very difficult to stop (I past the toll booth guy by a foot). Fuel economy has been reduced. The second condition is more intermittent and could be very serious. …”

NHTSA complaint #10056555, filed 2004-02, 97,200 miles

“I was almost at a dead stop when the car just surged foward once and before I could put the brake on, it surged foward again and sent me through a plate glass window at duncun donuts we hit a pole between the two windows very hard and the air bags didn't deploy.”

NHTSA complaint #706429, filed 1999-05

“While traveling down interstate 5, the traffic slowed due to an accident on the opposite side of the fwy., upon noticing the traffic slowing I released my foot from the accelerator the traffic came to a complete stop, I stepped on the brakes applying them all the way. I had plenty of time to stop the car in order to avoid an accident. Unfortunately the cars brakes didn't stop the car, and the car stopped when I hit the car in front of me. The air bags didn't deploy either. I had the same type of accident in march of 2000. I just felt maybe it was my fault and didn't think about it much. …”

NHTSA complaint #756313, filed 2002-01

Vehicle speed control: other model years

YearComplaintsShare of year
2025117%
202226%
202113%
202043%
201943%
201833%
201722%
201696%
2015149%
201436%
201346%
201244%
201153%
201085%
200858%
20063034%
2005158%
2004510%
200358%
200247%
2001912%
20001011%
19991213%
1998109%
199796%
199676%
199532%
199423%
199345%
199224%
199156%
199056%

Other parts of the 1999 Subaru Legacy

Transmission and drivetrain
18 complaints
Brakes
12 complaints
Air bags
11 complaints
Engine cooling
11 complaints
Suspension
8 complaints
Fuel system
7 complaints
Other or unknown
7 complaints
Tires
5 complaints
Body and structure
4 complaints
Equipment
3 complaints
Electrical system
2 complaints
Engine
2 complaints

← All problems reported for the 1999 Subaru Legacy

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.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology