What transmission does my Hyundai or Kia have?

TSS parts for Hyundai and Kia transmissions: A6MF1 filter, IVT Dorado overhaul kit and A6GF1 friction plates

In short

Hyundai and Kia Mexico give the type of transmission (4-, 6- or 8-speed automatic, IVT or dual clutch), not the code; we inferred the names from Hyundai and Kia's US documents.
The most common is the 6-speed "A6" automatic: the A6GF1 with the 1.6 (Accent, Rio, HB20, K3, Creta) and the A6MF1 or A6MF2 with the 2.0 and 2.4 (Tucson, Sportage).
The Mexican Accent and Rio are 6-speed automatics, not IVTs as in the US; the IVT arrived with the 2019 Forte, the 2021 Elantra, the Creta 1.5, the Seltos 1.5 and the Sonet.
If it's stuck in 4th with code P0880, Hyundai says to check fuses, ground and harness before the transmission; the bulletins we cite are from the US.
TSS has filters, overhaul kits and friction plates for the A6, the IVT and the Grand i10's transmission; it has no parts for the 8-speed or the dual-clutch units.

If you have an automatic Hyundai or Kia and you're buying transmission parts, you first need to know which unit it has: the same model changes transmission with the year and engine, and the Mexican version isn't always the same as the US one. Here's which transmission each automatic Hyundai and Kia sold in Mexico has, how to confirm yours, what problems the brands documented and what fluid it takes.

What transmissions do Hyundai and Kia use?

Hyundai and Kia share almost all their transmissions. The most common is the 6-speed automatic shops call the "A6", and its name depends on the engine: A6GF1 with the 1.6 (and some 1.8 and 2.0 engines), A6MF1 or A6MF2 with the 2.0 and 2.4, and A6LF with the V6s. Hyundai distinguishes two generations: the first with 8 solenoids in the valve body, and the second, from around 2017, with 7. Recent models use the IVT, Hyundai and Kia's chain-type CVT, an 8-speed automatic (the A8MF1 with the 2.5) or 7- and 8-speed dual-clutch transmissions. Older cars have 4-speed automatics.

Hyundai and Kia Mexico don't publish the code: their spec sheets say "Automática / 6", "IVT" or "DCT / 7". We inferred each unit's name from Hyundai and Kia's US documents for the same engine. And Mexico isn't the US: here the automatic Accent and Rio are 6-speeds (the US cars switched to an IVT in 2020), and the 2016 Tucson had no dual clutch.

How to tell which one your Hyundai or Kia has

The spec sheet or manual: "Automática / 6 velocidades" is the A6 family; "IVT" is the CVT; "DCT / 7" is a 7-speed dual clutch; "Automática / 8" is the 8-speed, and "DCT / 8" (2021-on Santa Fe), an 8-speed dual clutch.
On the A6, the number etched into the case next to the riveted tag tells you which it is: it starts with NA on the A6GF1, EA or FA on the A6MF and BA on the A6LF. It can be hard to see; veinte07 explains how to tell an A6GF1 from an A6MF1 (in Spanish).
The second-generation 6-speed and the 8-speed carry a barcode label: these are the pressure values loaded into the transmission computer (TCU) when the transmission or the computer is replaced.

What transmission do the Hyundai Accent, HB20 and Grand i10 have?

Grand i10 (1.2): when it arrived in 2015 it was manual only. The 4-speed automatic came around 2016 (TSS sells it as the A4CF0); in 2021 and 2022 the option was a 5-speed automated manual, and from 2023 the 4-speed automatic is back.
2018 to 2022 Accent (1.6, built in Mexico): 6-speed automatic, the A6GF1. In the US, the 2020 to 2022 Accent switched to an IVT, but Mexican sources still describe the 6-speed.
2023-on HB20 (1.6): 6-speed automatic, from the A6GF1 family.

What transmission do the Hyundai Elantra and Creta have?

2015 and 2016 Elantra (1.8): 6-speed automatic, probably the A6GF1.
2017 to 2020 Elantra (2.0): 6-speed automatic; it can be an A6GF1 or an A6MF1, so check the number etched into the case.
2021-on Elantra (2.0): IVT.
2017 to 2020 Creta (1.6): 6-speed automatic (A6GF1). From 2021 to 2023: IVT with the 1.5 and a 7-speed dual clutch with the 1.4 turbo; in 2024 and 2025, IVT only, and from 2026 a turbo returns, the 1.5, with a 7-speed dual clutch.
2023-on Creta Grand (2.0): 6-speed automatic, probably the A6MF1; confirm it on the case.

What transmission do the Hyundai Tucson and Santa Fe have?

2014 and 2015 ix35 (2.0): 6-speed automatic, probably the A6MF1.
2016 to 2018 Tucson (2.0): 6-speed automatic (A6MF1). In Mexico it didn't get the dual-clutch transmission of the US Tucson 1.6 turbo.
2019 to 2021 Tucson: the 2.0 and the Limited's 2.4, both with the 6-speed automatic (A6MF1 and A6MF2).
2022-on Tucson (2.5): 8-speed automatic, the A8MF1.
2014 to 2018 Santa Fe (3.3 V6): 6-speed automatic from the A6LF family. 2019 and 2020 Santa Fe (2.0 turbo): 8-speed automatic. From 2021 (2.5 turbo): 8-speed dual clutch.

What transmission do the Kia Rio, K3 and Forte have?

2016 Rio: manual only. 2018 to 2023 Rio (1.6, built in Pesquería): 6-speed automatic (A6GF1). The US Rio switched to an IVT in 2020, so the bulletins for that IVT don't apply to the Mexican Rio.
2024-on K3: 6-speed automatic, with the 1.6 and with the GT-Line's 2.0.
2016 to 2018 Forte (2.0): 6-speed automatic. 2019-on Forte (2.0): IVT. The Forte GT (1.6 turbo, from 2020) uses a 7-speed dual clutch, and the 2025 K4 has an IVT with the 2.0 and an 8-speed automatic with the turbo.

What transmission do the Kia Sportage and Sorento have?

2016 Sportage (2.0): 6-speed automatic. 2017 to 2022 Sportage: 6-speed automatic with the 2.0 and the 2.4; Kia calls it second generation (A6MF2-2).
2023-on Sportage: 6-speed automatic with the 2.0 and 8-speed with the 2.5; from 2026, 8-speed (the hybrid uses a 6-speed).
2016 to 2020 Sorento: 6-speed automatic with the 2.4 and the 3.3 V6. In the US, the 2019 V6 already had an 8-speed, so confirm yours on the spec sheet. 2021-on Sorento (2.5): 8-speed automatic.
2016 to 2020 Optima (2.4): 6-speed automatic (A6MF2).

What transmission do the Kia Soul, Seltos and Sonet have?

2016 to 2019 Soul: 6-speed automatic with the 1.6 and the 2.0. 2020-on Soul: 6-speed automatic on the LX (1.6) and IVT on the EX (2.0).
2020 to 2023 Seltos: 6-speed automatic with the 1.6 and a 7-speed dual clutch with the 1.4 turbo. From 2024: IVT with the 1.5 (the dual-clutch turbo stayed on the SXL); the 2027 adds a 1.5 turbo with an 8-speed automatic.
2024-on Sonet (1.5): IVT. The spec sheet says "8-speed intelligent variable transmission": those are steps the CVT simulates, not 8 gears.

Dodge Verna and Attitude, built by Hyundai

2004 to 2006 Dodge Verna and 2007 to 2011 Attitude (Hyundai's Accent): 4-speed automatic, sold by parts suppliers as the A4AF3.
2012 to 2014 Attitude (1.6): 4-speed automatic (A4CF1 or A4CF2), not the 6-speed of the US Accent.
2015-on Attitude: no longer a Hyundai, it's a Mitsubishi Mirage with a CVT; we cover it in our Jeep, Dodge and Mitsubishi CVT guide.

Common problems Hyundai and Kia documented

These are the problems Hyundai and Kia documented in US technical bulletins and campaigns. The years are for US vehicles, and not all of them apply to Mexican cars:

Symptom and models	What Hyundai and Kia documented in the US
Stuck in 4th with the check engine light and a bang into D or R (6-speed: Accent, Elantra, Tucson, Santa Fe)	Code P0880: a fault in the solenoids' power supply. Hyundai says to check the TCU1 and TCU2 fuses, the computer ground and the valve body harness, and not to replace the transmission for this code.
Check engine light with P0743, P0748, P0753, P0758, P0763, P0768 or P0773 (2017 Elantra 2.0 and Santa Fe Sport 2.4)	Replace the solenoid the code points to and its harness, after checking connectors and pins.
Code P0711, P0712 or P0713 (Kia 6-speeds from 2011: Sorento, Sportage, Optima, Forte, Rio and Soul)	Replace the fluid temperature sensor; Kia says not to replace the transaxle.
Harsh or slipping shifts after replacing the transmission or the computer, with a blinking gear indicator	The pressure values from the case label weren't loaded into the computer and relearned (6- and 8-speeds).
2017 and 2018 Sportage 2.4: engine flares on shifts	Reprogramming of the transmission computer.
IVT with P0730, P0731, P0741 or P0867: slips or won't accelerate (2019 and 2020 Forte, 2020 and 2021 Soul, 2021 Seltos, 2020 Elantra)	First a software update; the IVT is replaced only if needed.
IVT with P0845 or P0846 and no symptoms	Replace only the oil pressure sensor, not the whole transmission.
7-speed dual clutch that shudders pulling away in traffic (Forte GT, Creta and Seltos turbo)	Kia says a light shudder pulling away is normal for a dual clutch; if the vibration is abnormal, there's a diagnosis, software and, if needed, a dual-clutch replacement.
8-speed: fluid leak at the back of the transmission (2022 Tucson)	Rear cover with a porous casting.
2023 Sportage: stuck in 5th and slow to accelerate, with P07xx or P0880	A harness rubbing against the shift cable bracket bolt.

Specialist shops report that on the A6 the reducing valve bores wear, which causes slipping shifts, neutrals, a bang on the 6-4 downshift and solenoid or gear ratio codes. And the 2021 and 2022 "automatic" Grand i10 feels like a manual because it is an automated manual.

In Mexico, PROFECO has no alerts for transmission problems on these models (we checked on October 24, 2026). To find out whether your vehicle has an open campaign, ask Hyundai or Kia with your VIN. veinte07 explains the generic codes (in Spanish): P0700, P0730, P0741, P0743, P0845 and P0846.

What fluid does your Hyundai or Kia transmission take?

Hyundai Mexico specifies genuine Hyundai ATF SP-IV for the automatic Grand i10, and Hyundai only approves the fluid in each vehicle's manual, with no additives. The IVT takes its own CVT fluid (SP-CVT1, per Hyundai in the US) and the dual-clutch units use gear oil, not ATF. Confirm yours in the manual: the wrong fluid causes harsh shifts and wear.

See TSS parts for Hyundai and Kia

TSS parts for Hyundai and Kia transmissions

The TSS catalog has parts for these units (we explain the difference between the Rojo and Dorado kits in TSS Rojo vs Dorado overhaul kits):

2018 to 2022 Accent, HB20, 2018 to 2023 Rio, K3 1.6, 2017 to 2020 Creta 1.6, and Soul and Seltos 1.6 (A6GF1): filters 142710B and 142710E (TSS lists two for the A6GF1: match them to your filter's part number), TSS friction plates, overdrive plate and pump seal.
2016 to 2021 Tucson, 2016 to 2022 Sportage, Sorento and Optima 2.4, and the 2.0 cars that turn out to be A6MF1 (A6MF1 and A6MF2): filter, Dorado overhaul kit without pistons, 3-5-Reverse friction plates and the same pump seal.
2021-on Elantra, 2019-on Forte, K4, Creta 1.5, Seltos 1.5, Sonet and Soul EX (IVT, sold by TSS as the C0GF1): internal filter and Dorado overhaul kit.
Grand i10 4-speed automatic (A4CF0): Dorado overhaul kit.
2012 to 2014 Dodge Attitude (A4CF1 and A4CF2): filter and Rojo overhaul kit.
2004 to 2006 Dodge Verna and 2007 to 2011 Attitude (A4AF3): filter and pan gasket.

TSS has no parts for the 8-speed automatics, the dual-clutch units, the Grand i10's automated manual or the hybrids. Confirm your transmission code before ordering. To buy online in the US, Sun Transmissions has collections for the A6GF1 and A6MF, A4CF, A4AF3, Hyundai and Kia.

TSS is an aftermarket brand with OEM-comparable quality and quality control on every product. It's sold through our authorized distributors: in Mexico, the full TSS catalog is at Transmisiones Veinte 07, and in the United States at Sun Transmissions.

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