2020 Hyundai Sonata engine

2-6
Vehicle Information
„„Smartstream G1.6 T-GDi
„„Smartstream G2.5 GDi
The actual engine room in the vehicle may differ from the illustration.ODN8089103/ ODN8089048L
ENGINE COMPARTMENT
1. Engine coolant reservoir .......................8-21
2. Brake fluid reservoir .............................8-24
3. Air cleaner .............................................8-26
4. Engine oil dipstick ................................ 8-19
5. Engine oil filler cap ................................8-19
6. Windshield washer fluid reservoir .......8-25
7. Fuse box ................................................8-46
8. Battery ....................................................8-31

02
2-7
DIMENSIONS
Itemsin. (mm)
Overall length 192.9 (4,900)
Overall width 73.2 (1,860)
Overall height 56.9 (1,445)
Front tread 205/65 R16
64.3 (1,633)
215/55 R17 63.9 (1,623)
235/45 R18 63.7 (1,618)
Rear tread 205/65 R16
64.6 (1,640)
215/55 R17 64.2 (1,630)
235/45 R18 64.0 (1,625)
Wheelbase 111.8 (2,840)
ENGINE SPECIFICATION
ItemSmartstream G1.6 T-GDi
Smartstream G2.5 GDi
Displacement cu. in. (cc) 97.08 (1,591)
152.37 (2,497)
Bore x Stroke in. (mm)3.03 x 3.06 (77 x 85.44)
3.47 x 4.00 (88.5 x 101.5)
Firing order 1-3-4-21-3-4-2
No. of cylinders 4, in-line4, in-line

02
2-11
RECOMMENDED LUBRICANTS AND CAPACITIES
To help achieve proper engine and powertrain performance and durability, use only
lubricants of the proper quality. The correct lubricants also help promote engine
efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
LubricantVolumeClassification
Engine oil
*1 *2
(drain and refill) Smartstream
G1.6 T-GDi 4.76 US qt. (4.5 ℓ)
API Lastest (SN PLUS) *3
Smartstream G2.5 GDi5.49 US qt. (5.2 ℓ)
API Lastest (SN PLUS) *3
Automatic transmission fluid 6.89 US qt. (6.5ℓ)MICHANG ATF SP-IV, SK ATF SP IV,
NOCA ATF SP-IV, S-oil ATF SP-IV
HYUNDAI genuine ATF SP-IV
or other brands meeting the
above specification approved by
HYUNDAI Motor Co.
Coolant Smartstream
G1.6 T-GDi 4.76 US qt. (4.5 ℓ)
Mixture of antifreeze and distilled
water (Ethylene glycol base
coolant for aluminum radiator)
Smartstream
G2.5 GDi 5.49 US qt. (5.2 ℓ)
Brake fluid
*40.74 ~ 0.85 US qt. (0.7 ~ 0.8 ℓ) DOT-4
Fuel 15.85 US gal. (60 ℓ)
14.79 US gal. (56 ℓ) (for ECO package model) Refer to “Fuel requirements” in
chapter 1.
*1 : Refer to the recommended SAE viscosity numbers on page 12.
*2 : Engine oils labeled Energy Conserving Oil are now available. Along with other additional
benefits, they contribute to fuel economy by reducing the amount of fuel necessary
to overcome engine friction. Often, these improvements are difficult to measure in
everyday driving, but in a year’s time, they can offer significant cost and energy savings.
*3 : If the recommended engine oil is not available in your country, you are able to use API
SL/ILSAC GF-3 or ACEA A3.
*4 : To maintain the best braking performance and ABS/ESC performance, we recommend
that you use genuine brake fluid that conform to specifications. (Standard : SAE J1704
DOT-4 LV, ISO4925 CLASS-6 and FMVSS 116 DOT-4)

Vehicle Information
2-12
Recommended SAE Viscosity
Number
CAUTION
Always be sure to clean the area around
any filler plug, drain plug, or dipstick
before checking or draining any
lubricant. This is especially important
in dusty or sandy areas and when the
vehicle is used on unpaved roads.
Cleaning the plug and dipstick areas
will prevent dirt and grit from entering
the engine and other mechanisms that
could be damaged.Engine oil viscosity (thickness) has an
effect on fuel economy and cold weather
operating (engine start and engine oil
flowability). Lower viscosity engine oils
can provide better fuel economy and
cold weather performance, however,
higher viscosity engine oils are required
for satisfactory lubrication in hot
weather.
Using oils of any viscosity other than
those recommended could result in
engine damage.
When choosing an oil, consider the
range of temperature your vehicle will be
operated in before the next oil change.
Proceed to select the recommended oil
viscosity from the chart.
Temperature Range for SAE Viscosity Numbers
Temperature °C
-30 -20 -10 010 20304050
(°F) -10020 40 60 80100120
Engine Oil
10W-3010W-30
0/5W-20, 0/5W-300/5W-20, 0/5W-30
*1 : For better fuel economy, it is
recommended to use the engine oil
of a viscosity grade 0W-20 (API Latest
(SN PLUS)). However, if the engine oil is
not available in your country, select the
proper engine oil using the engine oil
viscosity chart.

Vehicle Information2-14
TIRE SPECIFICATION AND
PRESSURE LABEL
ODN8H019025L
The tires supplied on your new
vehicle are chosen to provide the best
performance for normal driving.
The tire label located on the driver’s
side center pillar gives the tire pressures
recommended for your car.
ENGINE NUMBER
ODN8019022
The engine number is stamped on the
engine block as shown in the drawing.

Seats & Safety System3-16
FrontFront
ODN8039019ODN8039019
While the engine is running, push either
of the switches to warm the driver’s seat
or front passenger’s seat.
During mild weather or under conditions
where the operation of the seat warmer
is not needed, keep the switches in the
OFF position.
• Manual temperature controlEach time you push the switch, the
temperature setting of the seat is
changed as follows:
- Front seat
UP UP
OFF  HIGH ()  HIGH ()
DOWN DOWN
LOW () MIDDLE ()  HIGH ()

DOWN UP
• Automatic temperature controlThe seat warmer starts to automatically
control the seat temperature in order
to prevent low-temperature burns after
being manually turned ON.
- Front seat
OFF  HIGH ()
30 MIN
LOW () MIDDLE ()
60 MIN
You may manually press the switch to
increase seat temperature. However, it
soon returns the automatic mode again.
• When pressing the switch for more
than 1.5 seconds with the seat warmer
operating, the seat warmer will turn OFF.
• The seat warmer defaults to the OFF position whenever the ignition switch is
in the ON position. However, if the Auto
Comfort Control function is ON, the
driver’s seat warmer will turn on and off
depending on the ambient temperature.
• Auto Comfort Control (for driver’s seat, if equipped)
The seat warmer automatically controls
the seat temperature depending on the
ambient temperature when the engine
is running. If the seat warmer switch is
pushed, the seat warmer will have to be
controlled manually. To use this function,
it must be activated from the Settings
menu in the AVN system screen. For
more information, refer to the separately
supplied Car Infotainment System
manual.

03
3-17
Front air ventilation seat
(if equipped)
ODN8039023ODN8039023
The air ventilation seats are provided
to cool the front seats by blowing air
through small vent holes on the surface
of the seat cushions and seatbacks.
When the operation of the air ventilation
seat is not needed, keep the switches in
the OFF position.
While the engine is running, push the
switch to cool the driver’s seat or the
front passenger’s seat.
• Each time you push the switch, the airflow changes as follows:
DOWN DOWN
OFF  HIGH ()  HIGH ()
UP UP
LOW () MIDDLE ()  HIGH ()

UP DOWN
• When pressing the switch for more than 1.5 seconds with the air ventilation seat
operating, the operation will turn OFF.
• The air ventilation seat defaults to the OFF position whenever the ignition switch
is in the ON position. However, if the
Auto Comfort Control function is ON,
the driver’s air ventilation seat will turn
on and off depending on the ambient
temperature.
• Auto Comfort Control (for driver’s seat, if equipped)
The air ventilation seat automatically
controls the seat temperature depending
on the ambient temperature when the
engine is running. If the air ventilation
seat switch is pushed, the seat warmer
will have to be controlled manually. To use
this function, it must be activated from
the Settings menu in the AVN system
screen. For more information, refer to
the separately supplied Car Infotainment
System manual.

Seats & Safety System3-42
WARNING
To reduce the risk of serious injury or
death from an inflating curtain air bag,
take the following precautions:
• All seat occupants must wear
seat belts at all times to help keep
occupants positioned properly.
• Properly secure child restraints as far
away from the door as possible.
• Do not place any objects over the air
bag. Also, do not attach any objects
around the area the air bag inflates
such as the door, side door glass,
front and rear pillar, roof side rail.
• Do not hang other objects except
clothes, especially hard or breakable
objects. In an accident, it may cause
vehicle damage or personal injury.
• Do not allow passengers to lean their
heads or bodies onto doors, put their
arms on the doors, stretch their arms
out of the window, or place objects
between the doors and seats.
• Do not open or repair the side curtain
air bags.
How Does the Air Bag System
Operate?
ODN8039033ODN8039033
The SRS consists of the following
components:
1. Driver’s front air bag module
2. Passenger’s front air bag module
3. Side air bag modules (front)
4. Curtain air bag modules
5. Retractor pre-tensioner assemblies
6. Air bag warning light
7. SRS control module (SRSCM) /
Rollover sensor
8. Front impact sensors
9. Side impact sensor (speed)
10. Side impact sensor (pressure)
11. Driver’s knee air bag module
12. Occupant classification system
13. Side air bag modules (rear)
The SRSCM (Supplemental Restraint
System Control Module) continually
monitors all SRS components while the
Engine Start/Stop button is in the ON or
START position to determine if a crash
impact is severe enough to require air
bag deployment or pre-tensioner seat
belt deployment.