Japanese speakers
Mistake: Pronouncing it as "FAA AWEI" with a clear gap between the words and a full katakana [a] vowel.
Why: Katakana English preserves each word as separate and cannot easily produce the r-linking that connects them.
Fix: In American English, the r of "far" links directly to the vowel of "away": [ˈfɑːrəˈweɪ]. In British RP (non-rhotic), a linking-r or intrusive-r appears: [ˈfɑːrəˈweɪ] as well, borrowed from GA-style linking despite non-rhoticity.
Korean speakers
Mistake: Producing a glottal reset before "away" and a full [a] vowel for both words.
Why: Korean prosody adds glottal onsets to word-initial vowels.
Fix: Let the r of "far" link directly to the schwa of "away": [ˈfɑːrəˈweɪ]. If you're targeting RP, the r appears as a "linking r" between vowels even though it disappears in "far alone".
Spanish speakers
Mistake: Producing the r as a rolled or tapped Spanish r, and full [a] vowels throughout.
Why: Spanish r is [r] or [ɾ]; English r is a very different [ɹ] approximant.
Fix: English r is [ɹ] — no tongue tap, just an approximant. And the vowel in "away" is a schwa [ə], not full [a]. Say [ˈfɑːrəˈweɪ].