48V HYUNDAI I20 2023 Owners Manual

2-15
02
DIMENSIONS
ItemSmartstream G 1.0 T-GDi/
Smartstream G1.0 T-GDi
(48V) MHEVSmartstream
G1.2Petrol 1.4
Displacement
cc (cu. in) 998 (60.90) 1,197 (73.05) 1,368 (83.48)
Bore x Stroke
in. (mm)2.80x3.31
(71.0x84.0)2.80x2.98
(71.0x75.6)2.83x3.31
(72.0 x 84.0)
Firing order 1-2-3 1-3-4-2 1-3-4-2
No. of cylinders 3 4 4
ENGINE SPECIFICATION
Items5 Door N-line CUV
Overall length159.06 (4,040) 160.43 (4,075) 164.56 (4,180)
Overall width69.88 (1,775) 69.88 (1,775) 69.88 (1,775)
Overall height 57.09 (1,450) 57.28 (1,455)58.66(1,490)/
59.05(1,500)*
Front tread185/65R15 60.82 (1,545) - 61.06 (1,551)
195/55R16 60.59 (1,539) - 60.82 (1,545)
215/45R17 60.27 (1,531) 60.27 (1,531) -
205/55R17 - - 60.86 (1,546)
Rear tread 185/65R15 60.98 (1,549) - 61.29 (1,557)
195/55R16 60.75 (1,543) - 61.06 (1,551)
215/45R17 60.47 (1,536) 60.47 (1,536) -
205/55R17 - - 61.1 (1,552)
Wheelbase 101.57 (2,580)
in. (mm)

2-19
02
LUGGAGE VOLUME GROSS VEHICLE WEIGHT
lbs. (kg)
Smartstream G 1.0
T-GDiSmartstream G 1.0
T-GDi (48V) MHEVSmartstream
G 1.2Petrol 1.4
6 M/T 7 DCT 6 M/T 7 DCT 5 M/T 6 M/T 6 A/T
3,527
(1,600)3,593
(1,630)3,571
(1,620)3,637
(1,650)3,417
(1,550)3,439
(1,560)3,505
(1,590)
- CUV
Smartstream G 1.0
T-GDiSmartstream G 1.0
T-GDi (48V)Smartstream
G 1.2 Gasoline 1.4
6 M/T 7 DCT 6 M/T 7 DCT 5 M/T 6 M/T 6 A/T
1630
(3,593)1660
(3,659)1660
(3,659)1680
(3,545)1580
(3,483)1590
(3,505)1620
(3,571)
M/T : Manual transmission
A/T : Automatic transmission
DCT : Dual clutch transmission
VDA
l (cu ft)MIN. 352 (12.4) /401(14.16)*
MAX. 1,165 (41.14) /1205(42.55)*
Min : Behind rear seat to upper edge of the seat back.
Max : Behind front seat to roof.
* : CUV

2-20
Vehicle information
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.
Lubricant Volume Classification
Engine oil *1
(drain and refill)Smartstream G 1.0
T-GDi/Smartstream *2
G1.0 T-GDi (48V) MHEV
b,PSTWV
Full synthetic SAE 0W20,
API SN PLUS/SP or ILSAC
GF-6
Smartstream G1.2*
2 
b,PSTWV
Petrol 1.4 *
3 
b,PSTWVFull synthetic SAE 5W20,
API Latest(ILSAC Latest)
Manual
transmission
fluidSmartstream G 1.0
T-GDi/Smartstream
G1.0 T-GDi (48V) MHEVa
b
(1.3~1.4 Imp. qts.)API GL-4, SAE 70W
- SK : HK SYN MTF 70W
- H.K.SHELL : SPIRAX S6
GHME 70W MTF
- GS CALTEX : GS MTF HD
70W Smartstream G 1.2a
b
(1.1~1.2 Imp. qts.)
Petrol 1.4a
b
(1.3~1.4 Imp. qts.)
Intelligent
manual
transmission
system
actuator fluidSmartstream G1.0
T-GDi (48V) MHEV
b86TWSAE J1704 DOT-4 LV,
ISO4925 CLASS-6, FMVSS116
DOT-4, FMVSS116 DOT-3
Automatic
transmission
fluidPetrol 1.4
b,PSTWVATF SP-IV
- SK ATF SP-IV
- MICHANG ATF SP-IV
- NOCA ATF SP-IV
- Hyundai Genuine ATF SP-IV
- GS ATF SP-IV
Dual clutch
transmission
fluidSmartstream G 1.0
T-GDi/Smartstream
G1.0 T-GDi (48V) MHEVa
b
(1.4~1.5 Imp. qts.)API GL-4, SAE 70W
HK D DCTF TGO-10 (SK)
SPIRAX S6 GHDE 70W DCTF
(H.K.SHELL)
7 DCTF HKM (S-OIL)
*1 : Refer to the recommended SAE viscosity numbers on the next page.
*2 : Requires <API SN PLUS (or Above) Full synthetic> grade engine oil. If a lower grade engine oil
(mineral oil including Semi-synthetic) is used, then the engine oil and engine oil filter must be
replaced as indicated severe maintenance condition
*
3 : Requires <API Latest(ILSAC Latest) Full synthetic> grade engine oil. If a lower grade engine
oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine oil filter must
be replaced as indicated severe maintenance condition

2-21
02
Lubricant Volume Classification
CoolantSmartstream G 1.0
T-GDi/
b86TW
MIXTURE, Antifreeze with
water (Ethylene glycol
base coolant for aluminium
radiator) Smartstream G1.0
T-GDi (48V) MHEV
b86TW
Smartstream
G 1.25M/T
b,PSTWV
Petrol 1.46A/T
b
(3.95 Imp. qts.)
6M/T
b,PSTWV
Brake/Clutch fluid As required FMVSS116 DOT-4
Fuel
b86JDO-

2-22
Vehicle information
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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.
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Temperature°C -30 -20 -10 0 10 20 30 40 50
(°F) -10 0 20 40 60 80 100 120
Smartstream G1.2/
G1.0 T-GDI/48V MHEV *
10W-20
Gasoline 1.4 *1
0/5W-20, 0/5W-30
10W-30
15W-40
20W-50
*1 : If mineral oil or semi-synthetic oil is used, it is a severe maintenance condition in terms of
engine oil change.
An engine oil displaying this American Petroleum Institute(API)
Certification Mark conforms to the International Lubricant
Specification Advisory Committee (ILSAC). It is recommended
to only use engine oils that uphold this API Certification Mark.

6
Start Stop Coasting (SSC) (for 48V MHEV) ................................................. 6-54SSC operating conditions ...................................................................................... 6-54
Engine restarting conditions ................................................................................. 6-54
Drive mode integrated control system ........................................................ 6-55
Special driving conditions ............................................................................6-58
Hazardous driving conditions ................................................................................ 6-58
Rocking the vehicle ................................................................................................. 6-58
Smooth cornering ................................................................................................... 6-59
Driving at night ........................................................................................................ 6-59
Driving in the rain .................................................................................................... 6-59
Driving in flooded areas ..........................................................................................6-60
Highway driving ......................................................................................................6-60
Winter driving ................................................................................................ 6-61Snow or icy conditions .............................................................................................6-61
Winter Precautions .................................................................................................. 6-63
Trailer towing (for europe) ............................................................................6-65If you decide to pull a trailer? ................................................................................. 6-66
Trailer towing equipment........................................................................................ 6-69
Driving with a trailer ................................................................................................ 6-70
Maintenance when towing a trailer ........................................................................6-72
Vehicle weight ............................................................................................... 6-73Overloading ..............................................................................................................6-73

6-48
Driving your vehicle
Automatic Transmission/Dual Clutch
Transmission
- Conventional Idle STOP

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(0 km/h).

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- Extended Idle STOP

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15 mph (25 km/h).

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- During Sailing Mode
You can keep engine off status from
sailing to standstill by pressing brake
pedal below 24 mph (40 km/h).
NOTICE
Vehicle which is equipped automatic
transmission or dual clutch
transmission must reach a speed of at
least 18 mph (30 km/h) for Extended
Idle STOP or 3 mph (5 km/h) for
Conventional Idle STOP since last idle
stop.
- If you unfasten the seat belt or open
the driver’s door (engine bonnet)
in auto stop mode at standstill, ISG
system will be deactivated.
Auto start
To restart the engine from idle stop
mode (except 48V MHEV)
Manual transmission vehicle/ Intelligent
Manual Transmission
Vehicle which is equipped with manual
transmission or intelligent manual
transmission is available two version of
restart.
- Conventional restart
Press the clutch pedal when the shift
lever is in the N (Neutral) position.
- Late restart (if equipped)
1. Depress the clutch pedal
2. Engage the gear
3. Release the brake pedal
NOTICE
1. Late restart function is only operated
when it is on a level ground and the
vehicle is stable.
2. To start the engine when the brake
pedal is not pressed or gear is already
engaged, press the brake pedal first
and press on the clutch pedal for
safety.
3. To turn on the engine without vehicle
movement with the brake pedal
pressed (only with Late Restart),

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immediately
4. After the engine stall, If you operate
as below the engine will start.

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engine completely stop

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6-68
Driving your vehicle
Reference weight and distance when trailer towing a trailer
Engine
ItemSmartstream
G 1.0 T-GDi/
Smartstream G1.0
T-GDi (48V) MHEVSmartstream
G 1.2Petrol 1.4
6 M/T 7 DCT 5 M/T 6 M/T 6 A/T
Maximum trailer weight
kg (Ibs.)With brake
System1,110
(2,447)1,110
(2,447)910
(2,006)1,000
(2,205)800
(1,764)
Without
brake
System450
(992)450
(992)450
(992)450
(992)450
(992)
Maximum permissible static vertical
load on the coupling device
kg (Ibs.)75 (165)
Recommended distance from rear
wheel centre to coupling point
inch (mm)33.46 (850)
M/T : Manual transmission
A/T : Automatic transmission
DCT : Dual clutch transmission

9-3
09
ENGINE COMPARTMENT
The actual engine room in the vehicle may differ from the illustration.
OBC3090001R
„Smartstream G 1.0 T-GDi/Smartstream G1.0 T-GDi (48V) MHEV
1. Engine coolant reservoir
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9-13
09
ENGINE OIL
Engine oil is used for lubricating,
cooling, and operating various hydraulic
components in the engine. Engine oil
consumption whilst driving is normal,
and it is necessary to check and refill the
engine oil regularly. Also, check and refill
the oil level within the recommended
maintenance schedule to prevent
deterioration of oil performance.
Check the engine oil following the below
procedure.
Checking the engine oil level
„Smartstream G 1.0 T-GDi/ Smartstream G1.0 T-GDi (48V) MHEV
OBC3090008
„Smartstream G1.2
OBC3090009
„Petrol 1.4
OBC3090010
1. Follow all of the oil manufacturer’s
precautions.
2. Be sure the vehicle is on the level
ground in P (Park) with the parking
brake set and the wheels blocked.
3. Turn the engine on and warm
the engine up until the coolant
temperature reaches a constant
normal temperature.
4. Turn the engine off, remove the oil
filler cap and pull the dipstick out.
Wait for 15 minutes for the oil to
return to the oil pan.
5. Wipe the dipstick clean and re-insert
it fully.
6. Pull the dipstick out again and check
the level. The level should be between
the F-L line.