According to modern syntactic theories, sentence comprehension can rely not only on grammatically driven algorithmic parsing of grammatical structure but also on good-enough processing, according to which we establish relations between words based on their meanings and our world knowledge without building accurate syntactic relations. Therefore, a good-enough processing strategy may lead to forming incorrect syntactic representations. In a self-paced reading experiment, we investigated how Russian-speaking adolescents (13–17 years old) and adults (20–40 years old) used good-enough vs. algorithmic parsing when reading grammatically complex sentences in a no-noise condition and in the presence of auditory linguistic noise (babble of voices). We found that adolescents relied on good-enough processing less than adults did. At the same time, we found that noise had no effect on reading speed neither in adolescents nor in adults but it speeded up question response time in adolescents.