Toyota Corolla sedan 2014-2018: problems, fuel economy, engine

Updated: September 06, 2021
For years, the Corolla has been one of the best-selling cars, thanks to its reputation for reliability, a comfortable interior and smooth ride.
2017 Toyota Corolla interior 2017 Toyota Corolla.
The 2014-2018 Corolla sedan is larger than the previous generation and offers more interior space. From 2014, the Corolla comes with a continuously variable transmission or CVT. For buyers looking for a conventional transmission, the 2014-2016 Corolla L (CE in Canada) still offers a 4-speed automatic.

Toyota Safety Sense (TSS-P) that includes Pre-Collision System with Pedestrian Detection, Lane Departure Alert with Steering Assist, Automatic High Beams and Dynamic Radar Cruise Control, is standard from 2017.

Toyota Corolla Problems: The Toyota service bulletin T-SB-0011-14 describes a problem in the 2014 Corolla with the 2ZR-FAE (Valvematic) engine that can cause the Check Engine light to come on. Toyota recommends reprogramming the PCM as a solution. The bulletin T-SB-0086-16 explains an issue in the 2014-2016 Corolla where the fuel tank filler neck that is out of position might cause the gas cap not to close properly. As a result the Check Engine light might come on with the code P0455 or P0456. The repair procedure involves repositioning of the fuel tank filler neck. A noisy water pump might need to be replaced ($290-$480). It's not a very difficult job.
If you have a smart key fob and the fob battery fails, you might need to hold the fob close to the start button to start the vehicle. Read more: Why a car won't start when you push the Start button? The battery in the fob lasts for about 3 years. It's easy to replace.

A failed starter motor may cause a car not to start. When turning the key, the vehicle would click but won't turn over. When this happens, the battery needs to be tested too. Replacing a starter motor costs $380-$510.
2015 Toyota Corolla 2015 Toyota Corolla S (E170).

The code P0171 can be caused by a dirty or bad mass airflow sensor or vacuum leaks.

There are a few complaints on Toyota forums about some areas of the infotainment screen not being responsive or that the audio system is rebooting or freezing. It looks like an isolated issue, but if out of warranty, replacing the screen or the unit is expensive. When buying a used car, it's a good idea to test if all the functions of the screen are working consistently. For phone pairing and other questions related to the infotainment system, check the Toyota Entune support website.

Various Toyota Safety Sense (Dynamic Cruise Control, Lane Departure, etc.) warning lights can be caused by snow or dirt blocking the front sensor or the camera on the windshield. This is a common problem in all modern cars with this type of system. According to the owner's manual for the U.S. 2017 Corolla (page 211), the radar sensor is located behind the front grille emblem. The manual advises, "Keep the radar sensor and front grille emblem clean at all times." The same goes for the camera sensor installed on the windshield. The manual says, "If the windshield is dirty or covered with an oily film, water droplets, snow, etc., clear the windshield."Overall, the number of reported problems is small compared to other cars.

Engine: The 2014-2018 Corolla comes with the 132-hp 1.8L 4-cylinder 2ZR-FE double-overhead cam engine.
Toyota Corolla 2ZR-FE engine Toyota Corolla 2ZR-FE engine.
It's a simple low-maintenance naturally aspirated (non-turbo) engine with a conventional fuel injection. Toyota has used this engine for many years and it's known to last for over 200K miles with good care.

The Corolla LE Eco is equipped with the 140-hp 2ZR-FAE engine that has a continuously variable valve lift system called Valvematic installed on intake valves. It controls how much the intake valves open depending on load, rpm and other factors.

Timing belt or timing chain? Both the 2ZR-FE and 2ZR-FAE engines come with a timing chain, there is no timing belt. A timing chain only needs to be replaced if it's stretched or worn out. If oil changes are done regularly and the engine always has the proper level of oil, a timing chain can last for the lifetime of the vehicle.

Fuel economy: The EPA rates the 2014-2015 Corolla with a CVT transmission at 29-37 mpg. The Corolla LE Eco is listed at 30/40 mpg, but the Eco trims are rare. The 2016-2018 Corolla with a CVT gets 28/36 mpg city/highway on regular gasoline. This means that on a long highway trip, the automatic Corolla can go for up to 449 miles (723 km) on one tank (13.2 US gallons or 50 liters). The 2014-2016 Corolla with a manual transmission is also rated at 28/36 mpg.

Continuously Variable Transmission or CVT: The 2014 Corolla is the first Toyota in North America to use a mechanical belt-driven CVT. The electric CVT or eCVT used in the Prius and other hybrids has a completely different design. Nissan, Subaru and other manufacturers also equip their cars with the mechanical CVT, but Toyota uses a different supplier for their CVTs: Aisin AW.

In 2018, Toyota announced Special Service Campaign JSD to address some issues with the CVT transmission in certain 2014-2017 Corolla models. The bulletin describes the inspection and repair process. Possible solutions include updating the software (reflashing the ECM) or replacing the valve body or the whole CVT transmission unit and updating the software. Check with a local Toyota dealer for more information. There are several discussions about this campaign on various forums and on Reddit. Google 'Special Service Campaign JSD' for updates. Read also: pros and cons of the CVT transmission.

Does the CVT transmission need fluid change? We checked the maintenance schedule in the Warranty and Maintenance Guide for the 2018 Corolla that you can find on the US Toyota Owners portal under 'Resources'. It recommends changing the CVT fluid every 60,000 miles if the vehicle is operated under Special Operating conditions that include 'Extensive idling and/or low speed driving for a long distance such as police, taxi or door-to-door delivery use'. This basically refers to conditions that can cause the CVT fluid to overheat, so if you think that your CVT transmission has been working too hard, check with your dealer if they can change the CVT fluid.

Similar cars:
Honda Civic 2012-2015
Mazda 3 2014-2018 review
Toyota Corolla 2009-2013 review
Chevrolet Cruze 2011-2015 review

Overall: The Corolla is still one of the most reliable compact cars. At the time we updated this article in March 2020, Consumer Reports rated the 2014-2018 Corolla as 'Recommended'. The number of complaints on the NHTSA website is relatively small. NHTSA awarded the 2014-2018 Corolla sedan with a 5-star overall crash-test rating.
Will the CVT transmission be reliable in the long run? It's too early to judge, but we will update as more information will be available. It's a fairly new thing for Toyota. Some owners also didn't like the CVT driving experience, specificallya lack of power and a louder engine noise. We prefer models with a conventional 4-speed automatic transmission. Among competitors, we recommend Mazda 3 and Honda Civic. Read also: What mileage is OK for a used car?

Maintenance tips: At higher mileage, an engine might consume some amount of oil between oil changes, which means it's a good idea to check the oil level regularly (see how) and top up if needed. Spark plugs need to be replaced at 120,000 miles ($170-$220 in a repair shop). An engine air filter needs to be changed every 30,000 miles or earlier if dirty ($25-$45). A drive (serpentine) belt needs to be inspected regularly after 60,000 miles and replaced if cracked or damaged ($85-$140). Read more about the serpentine belt.

Engine oil capacity: The oil capacity for the 2ZR-FE and 2ZR-FAE engines (Drain and refill with filter) is 4.4 US quarts or 4.2 liters according to the owner's manual. SAE 0W-20 is the recommended oil grade. Read also: Illustrated maintenance checklist.