From Ford Wiki

Mazda has used the 121 name on a variety of cars from 1975 until 2001:

• 1975–1981 — Large Personal luxury car, see Mazda Cosmo
• 1988–1991 — Europe export version of the Ford Festiva Subcompact car
• 1991–1995 — Europe export version of the Autozam Revue subcompact 4-door notchback sedan
• 1996–2001 — Export version of the Mazda Demio Subcompact car (in countries where the 121 below was not sold)
• 1996–2001 — Clone of the fourth-generation Ford Fiesta Subcompact car, sold in Europe

v • Mazda • e Mazda road car timeline, 1990s–2000s
Type	1990s										2000s
	0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9
Kei car	Carol					Carol				Carol					Carol
					AZ-Wagon				AZ-Wagon					AZ-Wagon					AZ-Wagon
									AZ-Offroad
													Spiano
	Scrum										Scrum/Scrum Wagon				Scrum/Scrum Wagon
Subcompact car	Revue/121						Demio/121						Demio/Mazda2						Demio/Mazda2
															Verisa
Compact car	Familia/323/Protegé					Familia/323/Protegé				Familia/323/Protegé					Axela/Mazda3
				Nissan AD						Nissan AD								Nissan AD
Mid-size car	Capella/626			Capella					Capella/626				Atenza/Mazda6						Atenza/Mazda6
				Cronos/626/Xedos 6/Eunos 500
				Eunos 800/Mazda Xedos 9/Millenia
Full-size car	Sentia/929/Efini MS-8					Sentia
Sports car	MX-6/Mystère			MX-6/Mystère/Efini MS-6
	Roadster/MX-5/Miata								Roadster/MX-5/Miata							Roadster/MX-5
		MX-3 Precidia
	RX-7			Efini RX-7/RX-7										RX-8
	Cosmo
			Mazda AZ-1
Pickup truck	B-Series				B-Series				B-Series									BT-50
Minivan										Mazda Premacy							Mazda Premacy
	Efini MPV/MPV									MPV								MPV/Mazda8
						Bongo Friendee
																			Biante
Crossover SUV																		CX-7
																			CX-9
Sport utility vehicle		Navajo										Tribute						Tribute
Van	Bongo										Bongo
Truck	Titan										Titan				Titan			Titan