2016 Toyota 4RUNNER Engine Problems
- Complaints
- 6about this part
- Share
- 8%of 80 total for the year
- Median mileage
- 4,867miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the engine of the 2016 Toyota 4RUNNER, 8% of the 80 complaints for this model year. Where a mileage was given, the median is 4,867 miles.
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.
“Bought a used 2016 4RUNNER. Had it 3 weeks and a rodent chewed the wires on the main wiring harness. Toyota (that I have 2 warranties through) does not cover rodent damage even though the material that they use attracts rodents apparently from my research. I have $3500-$5500 in damage and my car has been at the dealership waiting for repair for 3 weeks now. The insurance company is fighting them on the repair and I am stuck without the vehicle. I do not have that kind of money to repair it myself. …”
NHTSA complaint #10935876, filed 2016-12, 13,500 miles“2016 Toyota 4RUNNER with less than 5000 miles every once in a while I have noticed a lack of response to throttle when making a right hand turn. By this I mean no increase in engine RPM's proportional to throttle position. I have shrugged it off as my imagination. Now I have had two occasions where after coming to a stop at a stop sign on a steep incline where when I released the brake pedal and stepped on gas the vehicle rolled back even though I had at least 1/4 throttle applied. Not a good situation if there is a vehicle behind you.”
NHTSA complaint #10910880, filed 2016-09, 4,867 miles“Toyota knowingly uses a soy based wire coating that attracts rodents. Something chewed through the wiring harness making my vehicle shake uncontrollably and act very strange. This is a huge safety concern because what if the damage was only partial and then through normal use like highway driving the wire fully comes apart disrupting any and all safety features”
NHTSA complaint #10993402, filed 2017-06, 12,000 miles“Since new, I have documented at least 20 occurrences of lack of acceleration, several times almost resulting in an accident. All occurrences happen from a stopped position, then applying at least half accelerator pedal, the truck will initially accelerate, then pause for several seconds, very scary when crossing traffic or going through an intersection. Happens on turns and when going straight.”
NHTSA complaint #11113810, filed 2018-07, 10 miles“This vehicle is junk. Has no power, excessive vibration, constant ticking, all over the road, cruise control speeds up uncontrollably, sits lopsided, extremely loud, brakes and steering lock up.,lacks heat, poor visibility . All these and more occurr while starting and driving vehicle.”
NHTSA complaint #10956888, filed 2017-02, 230 milesRelated service bulletins
- 11005119Jun 19, 2024This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
- 11005061Jun 19, 2024This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
- 10164330Jul 1, 2019TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections…
- 10164329Jul 1, 2019TSB: Some 2014 ? 2019 model year 4Runner vehicles may exhibit a whine or groan noise from the rear of the vehicle. This condition may occur while driving around 40 ? 60 mph at a…
- 10152138Aug 18, 2017TSB: Some 2014 ? 2016 model year Highlander HV, 2015 Tacoma, 2015 ? 2016 Venza, 2015 ? 2017 4Runner, Avalon, Camry, and 2016 ? 2017 Avalon HV and Camry HV vehicles may exhibit a…
- 10149217Sep 14, 2016TSB: Supersession Notice. Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 2 | 3% |
| 2024 | 1 | 10% |
| 2023 | 2 | 6% |
| 2022 | 1 | 3% |
| 2019 | 6 | 9% |
| 2018 | 5 | 8% |
| 2017 | 2 | 6% |
| 2016 | 6 | 8% |
| 2015 | 8 | 9% |
| 2014 | 6 | 8% |
| 2013 | 3 | 8% |
| 2012 | 5 | 5% |
| 2011 | 6 | 4% |
| 2010 | 3 | 2% |
| 2009 | 2 | 9% |
| 2008 | 7 | 7% |
| 2007 | 3 | 2% |
| 2006 | 7 | 2% |
| 2005 | 21 | 5% |
| 2004 | 18 | 3% |
| 2003 | 10 | 1% |
| 2002 | 5 | 2% |
| 2001 | 5 | 3% |
| 2000 | 4 | 1% |
| 1999 | 3 | 1% |
| 1996 | 1 | 1% |
| 1995 | 8 | 5% |
| 1994 | 1 | 2% |
| 1992 | 1 | 2% |
| 1990 | 1 | 1% |
Other parts of the 2016 Toyota 4RUNNER
18 complaintsOther or unknown
18 complaintsAir bags
10 complaintsSuspension
9 complaintsBody and structure
8 complaintsTransmission and drivetrain
6 complaintsBrakes
5 complaintsFuel system
4 complaintsSteering
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsWheels
4 complaintsBack-over prevention (rear camera)
3 complaints
← All problems reported for the 2016 Toyota 4RUNNER
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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