2015 Hyundai Sonata: A Refined Entry In A Crowded Segment

Three Motor Options

When Hyundai debuted the last-gen Sonata, it was the first company to swap the optional V6 for a turbocharged four-cylinder in a U.S. market mid-sized sedan. Hyundai continues to offer a trio of four-cylinder engines this time around, with better tuning for improved drivability.

The 2.4-liter Theta II remains the Sonata's standard motor, but power delivery changes. While the last generation made 190hp at 6300RPM and 179lb-ft of torque at 4250 RPM, the new Sonata achieves 185hp at a lower 6000RPM and 178lb-ft at 4000 RPM. Going by the numbers, Hyundai's latest is down five horses. However, the tuning effort improves the power band for more low-end grunt, which I believe makes it better for daily driving.

Optional is the 2.0-liter turbocharged four-cylinder that makes 245hp at 6000 RPM and 260lb-ft at 1350 RPM. This is down quite a bit from the previous generation’s 274hp at 6000 RPM. But peak numbers can be deceiving, since maximum torque on the new Sonata hits 300RPM sooner and remains flat between 1350 to 4000RPM. Hyundai manages this by swapping out a single-scroll turbo in favor of a twin-scroll unit to minimize lag. The turbocharged motor is only available in the Sport 2.0t trim level.

Both motors are paired with a six-speed automatic transmission. The Sport 2.0t trim level gets steering wheel-mounted paddle shifters for more enthusiastic driving.

The last motor option is the 1.6-liter turbocharged four-cylinder that comes on the Eco model. This motor made its debut in the more performance-minded Veloster Turbo, but is tuned for better fuel economy in the Sonata. Early estimates from Hyundai put that engine's power around 177hp at 5500RPM and 195lb-ft at 1500 to 4000RPM. It's mated to a seven-speed dual-clutch transmission, which Hyundai likes to point out is a first in the mid-size segment.

Fuel economy for the standard 2.4-liter is 25/37/29 MPG for city/highway/combined on the SE trim level and 24/35/28 MPG on heavier trim levels. Opting for the performance-minded turbo brings fuel economy down to 23/32/26 MPG, while the fuel-sipping Eco is estimated around 28/38/32MPG. The fuel economy numbers are quite respectable among its competition, albeit not top-of-the-class.

Personally, I think the 1.6-liter turbocharged engine is the best of the three. While the 2.4-liter option delivers adequate motivation for daily driving and highway cruising, the 1.6-liter motor has much more low-end torque to make the car really scoot. The most powerful powerplant is very smooth, but it doesn’t feel like it offers enough of an improvement over the base 2.4-liter in normal driving to justify the additional cost.

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22 comments
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  • blackmagnum
    Thanks for the informative review. My next mid-sized sedan will definitely be a Toyota Camry.
  • cknobman
    Yuck, dont like the styling at all compared to the previous generation.
    To top it off the performance engine gets gimped.
  • tuanies
    749236 said:
    Thanks for the informative review. My next mid-sized sedan will definitely be a Toyota Camry.


    The Mazda 6 is still the best in my eyes, but the infotainment system they use is horrible. Toyota Entune is very dated as well.

    59464 said:
    Yuck, dont like the styling at all compared to the previous generation. To top it off the performance engine gets gimped.


    From what I've heard, the previous gen sold very well in the US but was a flop internationally, hence why they went back to more conventional styling. I don't expect them to sell many turbos this time around, or those that will don't care about raw output numbers.
  • punahou1
    My next car will NOT be connected to the internet or any other cloud based technology. I can see it now - terrorists hack into multiple cars and initiate an acceleration virus....
  • tuanies
    438265 said:
    My next car will NOT be connected to the internet or any other cloud based technology. I can see it now - terrorists hack into multiple cars and initiate an acceleration virus....


    Or compromise Tesla's Autopilot system remotely...
  • gbair
    The new steering wheel controls look pretty similar to the '14 Kia Optimas, which I didn't really like.
  • Kary K
    Not terribly impressed with the Apple solution if it requires USB. I probably won't like the Android solution either. but then I'm fairly happy with the various players being able to connect to a car stereo by BT. Smartphones change too much to buy a car based on what they are currently like.
  • hst101rox
    I wonder when the Sonata will be offered as a plugin hybrid not just hybrid and a lean burn engine not just Atkinson cycle
  • Ninjawithagun
    UGLY! What the hell were the design engineers thinking? Far worse design versus ALL of the previous generation body styles. I don't give a crap about the interior design, if the outside of my car is going to look like that? Hyundai really needs to consider firing the moron senior engineer that allowed this ugliness to go into production. Damn.
  • tuanies
    1791104 said:
    Not terribly impressed with the Apple solution if it requires USB. I probably won't like the Android solution either. but then I'm fairly happy with the various players being able to connect to a car stereo by BT. Smartphones change too much to buy a car based on what they are currently like.


    USB is a must IMO or you'll just have something very demanding draining your phone and pissed off customers wondering why their battery life sucks.

    1748327 said:
    I wonder when the Sonata will be offered as a plugin hybrid not just hybrid and a lean burn engine not just Atkinson cycle


    Its rumored to come soon IIRC.
  • hp79
    Thanks for reminding some idiots out there to use their turn signals. I see at least 2 of 10 people not using turn signals all the time. This is in Portland, Oregon area.
  • zubikov
    This looks like a desperate knock-off from a Ford Fusion. Watch Hyundai market the car with carefully-chosen slightly-better specs than other mid-size sedans. Thankfully I've had a chance to drive many sedans over the years, and I know that Hyundai is always the low end in every category.

    The 2015 Sonata also reminds me of Samsung's just-in-time attempts at copycat smartphones over the years. Can anyone in South Korea think original anymore?
  • tuanies
    47809 said:
    Thanks for reminding some idiots out there to use their turn signals. I see at least 2 of 10 people not using turn signals all the time. This is in Portland, Oregon area.


    I despise driving in downtown Portland. I understand pedestrians have right of way and everything, but does nobody look both ways before diving into the street while texting on their phone?

    285755 said:
    This looks like a desperate knock-off from a Ford Fusion. Watch Hyundai market the car with carefully-chosen slightly-better specs than other mid-size sedans. Thankfully I've had a chance to drive many sedans over the years, and I know that Hyundai is always the low end in every category. The 2015 Sonata also reminds me of Samsung's just-in-time attempts at copycat smartphones over the years. Can anyone in South Korea think original anymore?


    I don't think it looks like the Fusion at all. Hyundai has come a long way and the Sonata is competitive. It's more going after the Camry and Accord. I'd say the Fusion is more on the sporting side and not too big whereas the Camry and Accord have gone nearly full-size like the Sonata. Hell, the Sonata is almost as big as the Azera, which makes the higher end car only suitable for people that want V6 power. Now come to think of it, maybe they detuned the turbo to get more people in Azeras?
  • Zircoben
    In terms of reliability, quality, and resale value, you can't go wrong with a Toyota Camry.
  • hst101rox
    Hey I'm around Portland OR / Vancouver Wa too. Aggravating when someone comes in close in front of you without turn signals. A quick toot of my train horn releases my pressure
  • tuanies
    1636921 said:
    In terms of reliability, quality, and resale value, you can't go wrong with a Toyota Camry.


    A Toyota is always a safe bet if that's what you want. For me, the drive is too dull and boring to ever consider it.

    1748327 said:
    Hey I'm around Portland OR / Vancouver Wa too. Aggravating when someone comes in close in front of you without turn signals. A quick toot of my train horn releases my pressure


    Which reminds me I need to find a set of Hella horns for the Project Mazda 5 and my wife's Leaf.
  • may1
    Why would I buy a car from a Honda-rip-off company
  • Zircoben
    242231 said:
    Why would I buy a car from a Honda-rip-off company


    Hyundais don't even look anything like Hondas. All they are doing is competing, not ripping them off in any sense.
  • Kary K
    396755 said:
    1791104 said:
    Not terribly impressed with the Apple solution if it requires USB. I probably won't like the Android solution either. but then I'm fairly happy with the various players being able to connect to a car stereo by BT. Smartphones change too much to buy a car based on what they are currently like.
    USB is a must IMO or you'll just have something very demanding draining your phone and pissed off customers wondering why their battery life sucks.


    Well, that raises another question--does the car's USB connection offer a 2.1 amp circuit?

    But in any case, for shorter trips I like the ability to just hop into the car and use a BT connection, not even touching my phone.
  • WyomingKnott
    47809 said:
    Thanks for reminding some idiots out there to use their turn signals. I see at least 2 of 10 people not using turn signals all the time. This is in Portland, Oregon area.


    I was once cut off by a no-signal lane changer. I caught up to him at a red light and called out the window "Your right turn signal is out." I meant it as sarcasm.

    He pulled over, checked his turn signal, and it was out. He thanked me. Glad I didn't curse him out for being to lazy to use it instead of my cool, understated sarcasm.
  • Kary K
    1636921 said:
    242231 said:
    Why would I buy a car from a Honda-rip-off company
    Hyundais don't even look anything like Hondas. All they are doing is competing, not ripping them off in any sense.


    Maybe May1 is just confused by the sound-alike name. ;)

    In any case, both companies make good cars, so that would be a reason to buy a Hyundai.
  • hst101rox
    1748327 said:
    Hey I'm around Portland OR / Vancouver Wa too. Aggravating when someone comes in close in front of you without turn signals. A quick toot of my train horn releases my pressure


    Which reminds me I need to find a set of Hella horns for the Project Mazda 5 and my wife's Leaf.

    Hornblasters sells the train horns, requires some space for the air system though. Someone managed to put the horns under the hood of a Smart car. I have the entire Shocker 240 system under the hood of my Civic.. Wanting to buy a used Volt, maybe put the horns and tank under the car just behind the battery and gas tank?
    Anyway it's quite an attention getter