2011 Hyundai Elantra Engine Option: 1.8L Inline-four Is Powerful, But Powertrain Reliability Is Inconsistent

Kiran Menon
Nov 15, 2021

The 2011 Hyundai Elantra debuted with a 1.8-liter ‘Nu’ engine, and some owners reportedly clocked over 100,000 miles without many problems. But the powertrain has showed inconsistent reliability.

2011 Hyundai Elantra - photo by Hyundai

Key Points

  • The 2011 Hyundai Elantra comes with only a single engine option: an all-new 1.8-liter four-cylinder. You can pair it with either a six-speed automatic or manual.
  • The 1.8-liter puts out 148 horsepower and 131 lb.-ft. of torque and remains competitive against its rivals. Although, spirited driving is not its forte.
  • The 2011 Elantra bests its competitors by offering class-leading fuel economy at 29 mpg city and 40 mpg highway.
  • The 2011 model year racked up seven recalls, but none of them is regarding the engine. But, from its nearly 400 complaints overall, the National Highway Traffic Safety Administration has logged several reports about the engine knocking, stalling, and making unusual noises, resulting in a class-action lawsuit.
  • Although the 1.8-liter had a few run-ins with reliability, it strikes a good balance between performance and efficiency.
  • The 2011 Elantra isn’t perfect, but with proper care and routine maintenance, it can last up to 250,000 miles or even more.

2011 Hyundai Elantra - photo by Hyundai

1.8L I4 May be the Only Available Engine, but Having Multiple Transmission Options Makes the 2011 Elantra Excel on Many Levels

When Hyundai introduced the all-new 2011 Elantra, the automaker also debuted its latest 1.8-liter “Nu” engine. Replacing the older 2.0-liter engine, it remained the only engine option available for the 2011 model year. However, owners could choose between a manual transmission or the newly-developed six-speed automatic.

The Elantra happens to be one of the most versatile cars in the segment. Its non-turbocharged 1.8-liter produces 148 horsepower and 131 lb.-ft. of torque.

On paper, the 2011 Elantra boasts a significant power advantage over the 140 horsepower 2011 Honda Civic and 136 horsepower 2011 Chevy Cruze. But sadly, it doesn’t translate well on the road.

Although developed with sporting intentions, the 2011 Elantra only manages to hit 0-60 mph in a slow 9.1 seconds. Just a few tenths quicker than the Civic, but nearly half a second slower than the Cruze.

On the plus side, having the six-speed manual is entertaining and makes the Elantra seem faster than the numbers would otherwise indicate, reports Motor Trend.

Where the Elantra bests its competitors is efficiency. Regardless of the transmission, the Elantra’s 1.8-liter is EPA-rated at 29 miles per gallon in the city and 40 mpg on the highway. In comparison, the 2011 Civic returns 26 /34 mpg city/highway, while the 2011 Cruze manages 26/37 figures.

As for oil capacity, the 2011 Hyundai Elantra takes 4.2 quarts with a viscosity of 5W-20.

2011 Hyundai Elantra - photo by Hyundai

Lack of Engines Recalls is Promising, but the 1.8L Engine Received Several Complaints, Followed by a Class Action Lawsuit

The NHTSA has seven recalls and nearly 400 complaints registered against the 2011 Hyundai Elantra. While none of the recalls involve the engine, several owners were unhappy with the new 1.8-liter and its reliability. Complaints about the engine knocking, stalling, and producing weird noises have been registered with the NHTSA.

Out of the 383 complaints, nearly 80 are registered against the Elantra’s engine. Owners report hearing a ticking sound that ultimately stalled the engine. Not everyone experienced the motor seizing all of a sudden. But the majority of the complaints mention the noise getting louder as the revs climbed. Even turning to the dealers proved pointless, because none could fix the issue.

Some engines were so badly affected that they had to be replaced, costing owners thousands of dollars. The average cost of a used 1.8-liter is $1,200, while a brand-new engine can cost between $3,000 to $4,000, excluding labor.

This ultimately ended with owners taking things a step further. A class-action lawsuit was filed, which identified the issue to stem from a faulty piston assembly, which created a gap between the piston and the cylinder. This causes the piston to slap against the cylinder wall damaging the engine block, creating oil sludge, and potentially leading to engine failure.

The settlement was ruled against Hyundai, and they were forced to extend the warranty and offer reimbursements to eligible owners.

2011 Hyundai Elantra - photo by Hyundai

Despite the Complaints, Several Satisfied Elantra Owners Clocked Over 100,000 Miles Without any Mechanical Issues

On the other side of the spectrum, there are Elantras that are rock solid. Several owners clocked over 100,000 miles with nothing but regular oil changes and routine maintenance.

Despite getting numerous complaints, the 1.8-liter held on pretty well. In fact, there are unique cases where owners have put anywhere between 200,000 to 350,000 miles with no serious mechanical issues.

Now comes the question of how long will a 2011 Hyundai Elantra engine last? Well, it largely depends on how you drive and maintain the car. If you are diligent with your maintenance and drive with a relatively lightfoot, the Elantra can last anywhere between 200,000 to 250,000 miles.

Then again, if you are super conservative, it can last even more. Just like this one that clocked a million miles on its original powertrain.

What’s our verdict? To put it simply: The 2011 Elantra is not perfect. But, if looked after properly, it could turn out to be an excellent daily driver. Though the 1.8-liter had a few run-ins with reliability, it strikes a good balance between performance and efficiency.

Photos: Hyundai

Owner Reviews

accountCircle Michael on February 4, 2022
Great car.
I have 250000 on my Elantra. I have had the start up rattle since 60000 but it has not affected any performance. The fuel mileage is great. I'ma school bus driver and a automotive technician with my small business. I change the oil every 5000 Miles using Pennzoil synthetic oil and STP. I just had problems with engine it had misfire on number 1 and low compression on number 3 but I have not had experience with the 1.8 L4 but some old fashion diagnostics it turned out tobe the VVTs were sluggish replaced and it runs perfect. This has been first problem. This is still a great driving car and I drive 120 miles a day and it is actually fun to drive. We drive it on trips on weekends. When this one needs another engine I will put one in and drive it until it finally gives up and I will buy another one. Maintenance is the key long life of any engine.
accountCircle LP. on December 4, 2022
Total Failure.
Bought the car used with 90,000km on it. WKept stalling in at red lights, stalling when shifting into reverse, and making weird clunking noises. Dealership determined that the engine block was causing the issue so I had it replaced (still covered by warranty, thankfully, as it was over $4000). The car stalled again the very next day and junked it soon after. Never going to buy from Hyundai again.
accountCircle Faith L on October 16, 2021
Good reliable car, and financially ideal for a young person.
I have owned my 2011 Hyundai Elantra for about five years. I have not experienced any major issues with the engine and it rides fairly smooth. Overall, my favorite thing about the car is that it has incredibly good gas mileage.
accountCircle Johnny P on October 17, 2021
Never had problems with my car. It is super reliable.
I have owned this car for the past year and it is great on gas mileage. No issues with the transmission or engine. Not to fast of a car but definitely has the speed to pass if needed.
accountCircle Jessica Z on November 12, 2021
Engine block had to be replaced
Recently the engine block had to be replaced. Luckily it was still covered by the warranty. But I feel less confident now, and it took three months for that repair to even be made.
accountCircle Brad B on November 1, 2021
Hyundai Elantra 2011 problems
The head gasket and head cylinder busted at 170000 miles with a need for a new engine. It does have a slight rattling start but has had that for a long time without problems.
accountCircle Rebecca L on November 14, 2021
Satisfied with the 2011 Elantra engine performance and reliability
The engine works great. The gas lasts a really long time especially for long car rides. I have never had a problem with my car ever before.
accountCircle Doris Larson on November 9, 2021
Engine recall issues
HYUNDAI CANADA does not realize the seriousness of the engine issues & read reports that the engines replaced with recalls are also faulty.
accountCircle Autumn W on November 11, 2021
Is pretty fast for being a 4 cylinder sedan, and gets great acceleration.
Smooth ride, eco boost engine gets great gas mileage, very comfortable to drive. Definitely would recommend for a great commuting vehicle.
accountCircle Danielle S on November 4, 2021
2011 Elantra, excellent vehicle and engine
This car has been very reliable with no major issues. We have almost 130,000 miles on it and engine and transmission still run smooth.
accountCircle Danielle B on November 16, 2021
The engine has lasted me well and has enough pep
This vehicle has a really long lasting engine and it moves very fast. I would recommend this car to anyone who wants to get a sedan.
accountCircle John S on October 29, 2021
Engine is having issues that have not been resolved
The engine is starting to occasionally skip and the dealer cannot even figure it out.
accountCircle Martin M on October 24, 2021
The 2011 Hyundai Elantra lacks power
The only issue I have is the lack of engine power and acceleration on the highway.
accountCircle Kris C on October 24, 2021
Engine noise when going up hills
My main dislike is the engine can sound "buzzy" at times, like going up hills.
accountCircle Brittany K on October 20, 2021
Gas mileage is good and the ride is smooth
Engine has very good get up and go. Awesome on gas mileage. Very dependable.
accountCircle Madison C on October 11, 2021
Engine sounds rough upon start up
Some clatter in the engine when it starts, but not a major problem.
accountCircle Cindy A on November 6, 2021
Had my engine replaced at 78K miles
At 78,000 miles the car's engine failed and had to be replaced.
accountCircle Alex W on October 30, 2021
Engine makes noises when the car starts up
It sounds like engine really revs up when I start the vehicle.
accountCircle Donna R on October 24, 2021
Has almost 90, 000 miles with no engine problems.
Drives great, dependable. Requires almost no maintenance.
accountCircle Rebekka M on October 24, 2021
Great gas mileage and long engine life.
I love how good on gas my car is and how well it drives.
accountCircle Adison C on October 27, 2021
Have had a recall on the engine
It had a recall on it about a month ago for the engine.
accountCircle Cindy Z on October 18, 2021
My engine had a defect
Had to have engine replaced at 82,000 due to defect.
accountCircle John C on November 5, 2021
My engine has been inconsistent
The engine sometimes skips for no apparent reason.
accountCircle Cherie P on October 15, 2021
Problem with water getting into engine block
I had an issue with water in the engine block.
accountCircle Domonique W on October 28, 2021
Engine can stall while driving
Throttle gets sticky and cuts car engine off.
accountCircle Mikey D on October 26, 2021
Had to have a new engine put in, thankful for warranty
I had to have a whole new engine put in.
accountCircle Shay M on October 30, 2021
2011 Hyundai Elantra review.
Problems with engine.
avatar Kiran Menon
Kiran has been a fan of automobiles ever since he was a kid, thanks in part to auto magazines and TV shows like Top Gear. Fast forward a few years, and this obsession eventually led him to earn a degree in automotive engineering. He now writes about all things motoring for Vehicle History and HotCars after starting his auto journalism career as a features writer for CarHP.
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