2018 Toyota Highlander 8 Speed Transmission Problems
If you own a 2018 Toyota Highlander with an 8-speed transmission, you may have experienced some issues with its performance. In this article, we will discuss the common problems associated with this transmission, the symptoms and signs to look out for, the potential consequences of ignoring these issues, and the repair costs you may incur.
Common Problems
Some of the most common problems reported by owners of the 2018 Toyota Highlander with an 8-speed transmission include:
- Harsh shifting between gears
- Delayed engagement when shifting into gear
- Transmission slipping
- Transmission overheating
- Check engine light illuminated
Symptoms and Signs

If you are experiencing any of the following symptoms or signs, it may indicate a problem with your transmission:
- Loud clunking or grinding noises when shifting
- Leaking transmission fluid
- Burning smell coming from the transmission
- Difficulty shifting gears
- Vehicle shaking or vibrating while driving
Consequences
Ignoring transmission problems can lead to more serious issues with your vehicle, including:
- Complete transmission failure
- Damaged internal components
- Costly repairs or replacement of the transmission
- Decreased fuel efficiency
- Unsafe driving conditions
Repair Cost
The cost of repairing a transmission problem in a 2018 Toyota Highlander with an 8-speed transmission can vary depending on the extent of the damage and the specific repairs needed. On average, you can expect to pay anywhere from $1500 to $4000 for transmission repairs. However, if the transmission needs to be replaced entirely, the cost can exceed $5000.
Transmission Trouble | Repair Cost |
---|---|
Harsh shifting | $1500 – $2500 |
Transmission slipping | $2000 – $3000 |
Complete transmission failure | $4000 – $6000 |
It is important to address any transmission issues promptly to avoid more costly repairs down the line. If you suspect that your 2018 Toyota Highlander is experiencing transmission problems, it is recommended to take it to a certified mechanic for a thorough inspection and diagnosis.