This isn't the easiest market to get data for but I just found this. It is difficult to compare year to year as the source for me always changes and there are differences in numbers from one place to another. They are as accurate as possible.
Sales in the mid noughties were in much higher than now (200,000k plus one source shows that anyway) but things have levelled off now in the 55,000 area. Suzuki used to be the top brand for many years but fell away in 2010, had a horror '11 but came back in somewhat in '12. Opel took over the top of the list in 2012 from temporary caretaker Ford.
The first two columns show 2011 and 2012 ranking, the second column in from the right is increase or decrease, and the extreme right shows market share.

3	1		Opel	7,160	16%	12.7%
5	2		Skoda	5,340	7%	9.4%
1	3		Ford	5,196	-19%	9.2%
2	4		VW	4,546	-27%	8.0%
4	5		Renault	3,431	-34%	6.1%
11	6		Suzuki	3,300	107%	5.8%
7	7		Fiat	2,512	-13%	4.4%
10	8		Nissan	2,311	11%	4.1%
6	9		Toyota	2,213	-30%	3.9%
15	10		Dacia	2,159	79%	3.8%
14	11		Kia	1,798	48%	3.2%
13	12		Audi	1,636	25%	2.9%
8	13		Peugeot	1,524	-41%	2.7%
18	14		BMW	1,389	32%	2.5%
12	15		Hyundai	1,234	-8%	2.2%
9	16		Citroen	1,200	-48%	2.1%
19	17		Volvo	1,137	9%	2.0%
16	18		Mercedes	1,087	-2%	1.9%
17	19		Honda	1,065	-3%	1.9%
20	20		Chevrolet	896	-2%	1.6%
22	21		Mazda	486	-33%
21	22		Seat	446	-40%
23	23		Mitsubishi	169	-61%
29	24		MINI	126	103%
27	25		Lancia	112
25	26		Lexus	109	-4%
28	27		Subaru	100	30%
24	28		Alfa Romeo	87	-24%
32	29		Land Rover	84
33	30		Jeep	51
			Others	3,623
			Total	56,527	0%

Data source: Thanks to www.autopareri.com/forum.
Picture source: Thanks to www.netcarshow.com

Car Sales Hungary: 2012

The GM Opel Astra is popular here, both the new and an older model that still sells here. I like the idea of keeping a cheaper older version going if it still has desirability - and this one clearly does. Other brands don't want to associate their car make with older offerings. Renault instead have budget brand Dacia and other companies are considering following Renaults lead. Nissan are to revive Datsun as a low price make in selected markets.
European brands dominate, although no VWs in the top 10 in a European market is a rare sight. As always in Europe the Qashqai is strong and even the smaller Juke is going OK. Suzuki make cars here, which helps them obviously. Toyota have some work to do.

1	Opel	Astra (Old)	3,102		Euro Brands
2	Skoda	Octavia	2,865		19 Models
3	Ford	Focus	2,085
4	Suzuki	Swift	1,743		Asian Brands
5	Dacia	Duster	1,452		6 Models
6	Skoda	Fabia	1,413
7	Opel	Astra (New)	1,395
8	Ford	Fiesta	1,123
9	Nissan	Qashqai	1,122
10	Suzuki	SX4	1,108
11	Renault	Fluence	1,098
12	VW	Golf	1,003
13	VW	Polo	965
14	Opel	Insignia	933
15	VW	Passat	904
16	Ford	Mondeo	885
17	Kia	Cee'd	827
18	Fiat	500	761
19	Opel	Corsa	755
20	Fiat	Gr Punto	745
21	Toyota	Yaris	735
22	Renault	Mégane	722
23	Nissan	Juke	711
24	VW	Jetta	708
25	Renault	Clio	655

Data source: please click here  
Picture source: Thanks to www.netcarshow.com

Car Sales Hungary By Model: 2012

Hungary Car Sales By Brand : 2015