Flat-twin engine

Flat-twin - horizontally-opposed two-cylinder piston engine. Article “Flat-twin engine” in English Wikipedia has 74.6 points for quality (as of July 1, 2025). The article contains 72 references and 8 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Flat-twin engine”, its content was written by 94 registered users of English Wikipedia and edited by 159 registered Wikipedia users in all languages.

The article is cited 394 times in English Wikipedia and cited 826 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #4342 in June 2003
• Global: #10332 in June 2003

The highest popularity rank from 2008:

• Local (English): #163842 in August 2012
• Global: #250056 in August 2012

There are 8 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Flat-twin engine		74.5574
2	Italian (it) Motore a due cilindri contrapposti		50.6902
3	Catalan (ca) Motor bicilíndric pla		47.2653
4	Japanese (ja) 水平対向2気筒		32.6811
5	French (fr) Moteur bicylindre à plat		24.3264
6	Chinese (zh) 水平對臥二缸引擎		22.7051
7	Portuguese (pt) Motor boxer de dois cilindros		16.7221
8	Finnish (fi) 2-bokseri		16.6454

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "Flat-twin engine" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Flat-twin engine		736 098
2	Japanese (ja) 水平対向2気筒		144 208
3	French (fr) Moteur bicylindre à plat		51 121
4	Chinese (zh) 水平對臥二缸引擎		24 281
5	Finnish (fi) 2-bokseri		5 421
6	Italian (it) Motore a due cilindri contrapposti		3 656
7	Portuguese (pt) Motor boxer de dois cilindros		2 652
8	Catalan (ca) Motor bicilíndric pla		456

More...

The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Flat-twin engine" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Flat-twin engine		3 095
2	Japanese (ja) 水平対向2気筒		418
3	French (fr) Moteur bicylindre à plat		246
4	Chinese (zh) 水平對臥二缸引擎		87
5	Italian (it) Motore a due cilindri contrapposti		58
6	Finnish (fi) 2-bokseri		27
7	Portuguese (pt) Motor boxer de dois cilindros		26
8	Catalan (ca) Motor bicilíndric pla		5

More...

The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Flat-twin engine" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Flat-twin engine		94
2	French (fr) Moteur bicylindre à plat		18
3	Italian (it) Motore a due cilindri contrapposti		16
4	Japanese (ja) 水平対向2気筒		15
5	Portuguese (pt) Motor boxer de dois cilindros		7
6	Finnish (fi) 2-bokseri		5
7	Catalan (ca) Motor bicilíndric pla		2
8	Chinese (zh) 水平對臥二缸引擎		2

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Flat-twin engine" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	French (fr) Moteur bicylindre à plat		1
2	Catalan (ca) Motor bicilíndric pla		0
3	English (en) Flat-twin engine		0
4	Finnish (fi) 2-bokseri		0
5	Italian (it) Motore a due cilindri contrapposti		0
6	Japanese (ja) 水平対向2気筒		0
7	Portuguese (pt) Motor boxer de dois cilindros		0
8	Chinese (zh) 水平對臥二缸引擎		0

More...

The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Flat-twin engine" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Flat-twin engine		394
2	Catalan (ca) Motor bicilíndric pla		129
3	Japanese (ja) 水平対向2気筒		115
4	Italian (it) Motore a due cilindri contrapposti		63
5	French (fr) Moteur bicylindre à plat		56
6	Portuguese (pt) Motor boxer de dois cilindros		53
7	Chinese (zh) 水平對臥二缸引擎		12
8	Finnish (fi) 2-bokseri		4

More...

#	Language	Value
ca	Catalan Motor bicilíndric pla
en	English Flat-twin engine
fi	Finnish 2-bokseri
fr	French Moteur bicylindre à plat
it	Italian Motore a due cilindri contrapposti
ja	Japanese 水平対向2気筒
pt	Portuguese Motor boxer de dois cilindros
zh	Chinese 水平對臥二缸引擎

Best Rank

English: #163842 08.2012

Global: #250056 08.2012

Best Rank

English: #4342 06.2003

Global: #10332 06.2003

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information