  We study Tamagawa numbers of elliptic curves with $\mathbb{Z}/2\mathbb{Z}
\oplus \mathbb{Z}/14\mathbb{Z}$ torsion and of elliptic curves with an
$n-$isogeny, for $n\in \{6,8,10,12,14,16,17,18,19,37,43,67,163\}$. We find that
Tamagawa numbers of elliptic curves with torsion $\mathbb{Z}/2\mathbb{Z} \oplus
\mathbb{Z}/14\mathbb{Z}$ are always divisible by $14^2$, with factors $14$
coming from rational primes with split multiplicative reduction of type
$I_{14k}$, one of which is always $p=2$. The only exception is the curve
1922c1, with $c_E = c_2 = 14$. As for $n-$isogenies, Tamagawa numbers of
elliptic curves with an $18-$isogeny must be divisible by $4$, while elliptic
curves with an $n-$isogeny for the remaining $n$ from the mentioned set must
have Tamagawa numbers divisible by $2$, except for finite sets of specified
curves.
