BMW Buyer Comparisons: Side-by-Side Decision Guides

Direct comparisons for the most common UK BMW buying decisions. Each guide includes a side-by-side dimension table, deeper look at each option, decision logic, UK 2026 pricing comparison, and recommendation by scenario (commuter, motorway, enthusiast, family, budget). Backed by the same engine and chassis data driving our model-specific reports.

Comparisons live: 10 Updated: 2026-05-13

Browse by decision

320d vs 320iBMW 320d vs 320i: which is the right used buy in 2026? Diesel vs petrol on the F30 / G20 3 Series. ULEZ status, real-world fuel economy, UK servicing cost, timi...F30 vs G20BMW F30 vs G20: should you buy the older F30 or the newer G20 3 Series? Engine line-up, ULEZ, iDrive, mild-hybrid, UK pricing, and buy-by-budget recommendation.E90 vs F30BMW E90 vs F30: classic naturally aspirated 3 Series or modern turbocharged generation? Engine lineups, ULEZ, running cost, used market depth, and buy-by-priori...F10 vs G30BMW F10 vs G30: should you buy the older F10 or the newer G30 5 Series? Engine lineups, ULEZ, iDrive, mild-hybrid, UK pricing, and buy-by-budget recommendation.F80 vs G80 M3BMW F80 M3 vs G80 M3: should you buy the older F80 or the newer G80? Engine, transmission, drivetrain, design, UK pricing, and buy-by-priority recommendation fo...N54 vs N55BMW N54 vs N55: which 3.0-litre inline-six to buy? Tuning potential, HPFP recall, wastegate rattle, UK reliability, and buy-by-priority recommendation. 335i, 53...F10 M5 vs F90 M5BMW F10 M5 vs F90 M5: which generation of twin-turbo V8 super-saloon? Manual analog (F10) vs xDrive modern (F90), power, transmission, UK pricing, M5 Competitio...330d vs 330iBMW 330d vs 330i: which is the right used buy? Six-cylinder diesel vs four-cylinder petrol on the F30 / G20 3 Series. Power, torque, ULEZ, UK fuel cost, residua...F87 M2 vs G87 M2BMW F87 M2 vs G87 M2: which M2 generation? Original M2 (N55), M2 Competition / CS (S55), and the new G87 M2 (S58). UK pricing, manual transmission availability,...M240i vs M2BMW M240i vs M2: M Performance B58 in F22 coupe, or full M-car with M-specific suspension and brakes? F22 M240i, G42 M240i, F87 M2 (original, Competition, CS), ...

Bimmer.AI is designed to help you identify BMW-specific buyer risks before you travel, negotiate, or pay for an inspection. It does not replace a physical inspection by a qualified mechanic, a legal vehicle-history check (e.g. HPI Check), or independent verification of finance, stolen, or write-off status. Repair-cost ranges are indicative UK figures that vary by region, specialist, parts supply, and labour rates.

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